| /* vi: set sw=4 ts=4: */ |
| /* |
| * Busybox main internal header file |
| * |
| * Based in part on code from sash, Copyright (c) 1999 by David I. Bell |
| * Permission has been granted to redistribute this code under the GPL. |
| * |
| * Licensed under the GPL version 2, see the file LICENSE in this tarball. |
| */ |
| #ifndef __LIBBUSYBOX_H__ |
| #define __LIBBUSYBOX_H__ 1 |
| |
| #include "platform.h" |
| |
| #include <ctype.h> |
| #include <dirent.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <inttypes.h> |
| #include <netdb.h> |
| #include <setjmp.h> |
| #include <signal.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <stdarg.h> |
| #include <stddef.h> |
| #include <string.h> |
| #include <sys/poll.h> |
| #include <sys/ioctl.h> |
| #include <sys/mman.h> |
| #include <sys/socket.h> |
| #include <sys/stat.h> |
| #include <sys/time.h> |
| #include <sys/types.h> |
| #include <sys/wait.h> |
| #include <termios.h> |
| #include <time.h> |
| #include <unistd.h> |
| #include <utime.h> |
| /* Try to pull in PATH_MAX */ |
| #include <limits.h> |
| #include <sys/param.h> |
| #ifndef PATH_MAX |
| #define PATH_MAX 256 |
| #endif |
| |
| #ifdef HAVE_MNTENT_H |
| #include <mntent.h> |
| #endif |
| |
| #ifdef HAVE_SYS_STATFS_H |
| #include <sys/statfs.h> |
| #endif |
| |
| #if ENABLE_SELINUX |
| #include <selinux/selinux.h> |
| #include <selinux/context.h> |
| #include <selinux/flask.h> |
| #include <selinux/av_permissions.h> |
| #endif |
| |
| #if ENABLE_LOCALE_SUPPORT |
| #include <locale.h> |
| #else |
| #define setlocale(x,y) ((void)0) |
| #endif |
| |
| #ifdef DMALLOC |
| #include <dmalloc.h> |
| #endif |
| |
| #if !ENABLE_USE_BB_PWD_GRP |
| # include <pwd.h> |
| # include <grp.h> |
| #endif |
| #if ENABLE_FEATURE_SHADOWPASSWDS |
| # if !ENABLE_USE_BB_SHADOW |
| # include <shadow.h> |
| # endif |
| #endif |
| |
| /* Some libc's forget to declare these, help them */ |
| extern char **environ; |
| |
| #if defined(__GLIBC__) && __GLIBC__ < 2 |
| int vdprintf(int d, const char *format, va_list ap); |
| #endif |
| /* klogctl is in libc's klog.h, but we cheat and not #include that */ |
| int klogctl(int type, char *b, int len); |
| /* This is declared here rather than #including <libgen.h> in order to avoid |
| * confusing the two versions of basename. See the dirname/basename man page |
| * for details. */ |
| char *dirname(char *path); |
| /* Include our own copy of struct sysinfo to avoid binary compatibility |
| * problems with Linux 2.4, which changed things. Grumble, grumble. */ |
| struct sysinfo { |
| long uptime; /* Seconds since boot */ |
| unsigned long loads[3]; /* 1, 5, and 15 minute load averages */ |
| unsigned long totalram; /* Total usable main memory size */ |
| unsigned long freeram; /* Available memory size */ |
| unsigned long sharedram; /* Amount of shared memory */ |
| unsigned long bufferram; /* Memory used by buffers */ |
| unsigned long totalswap; /* Total swap space size */ |
| unsigned long freeswap; /* swap space still available */ |
| unsigned short procs; /* Number of current processes */ |
| unsigned short pad; /* Padding needed for m68k */ |
| unsigned long totalhigh; /* Total high memory size */ |
| unsigned long freehigh; /* Available high memory size */ |
| unsigned int mem_unit; /* Memory unit size in bytes */ |
| char _f[20 - 2*sizeof(long) - sizeof(int)]; /* Padding: libc5 uses this.. */ |
| }; |
| int sysinfo(struct sysinfo* info); |
| |
| |
| /* Make all declarations hidden (-fvisibility flag only affects definitions) */ |
| /* (don't include system headers after this until corresponding pop!) */ |
| #if __GNUC_PREREQ(4,1) |
| # pragma GCC visibility push(hidden) |
| #endif |
| |
| |
| #if ENABLE_USE_BB_PWD_GRP |
| # include "pwd_.h" |
| # include "grp_.h" |
| #endif |
| #if ENABLE_FEATURE_SHADOWPASSWDS |
| # if ENABLE_USE_BB_SHADOW |
| # include "shadow_.h" |
| # endif |
| #endif |
| |
| /* Tested to work correctly with all int types (IIRC :]) */ |
| #define MAXINT(T) (T)( \ |
| ((T)-1) > 0 \ |
| ? (T)-1 \ |
| : (T)~((T)1 << (sizeof(T)*8-1)) \ |
| ) |
| |
| #define MININT(T) (T)( \ |
| ((T)-1) > 0 \ |
| ? (T)0 \ |
| : ((T)1 << (sizeof(T)*8-1)) \ |
| ) |
| |
| /* Large file support */ |
| /* Note that CONFIG_LFS=y forces bbox to be built with all common ops |
| * (stat, lseek etc) mapped to "largefile" variants by libc. |
| * Practically it means that open() automatically has O_LARGEFILE added |
| * and all filesize/file_offset parameters and struct members are "large" |
| * (in today's world - signed 64bit). For full support of large files, |
| * we need a few helper #defines (below) and careful use of off_t |
| * instead of int/ssize_t. No lseek64(), O_LARGEFILE etc necessary */ |
| #if ENABLE_LFS |
| /* CONFIG_LFS is on */ |
| # if ULONG_MAX > 0xffffffff |
| /* "long" is long enough on this system */ |
| # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX) |
| /* usage: sz = BB_STRTOOFF(s, NULL, 10); if (errno || sz < 0) die(); */ |
| # define BB_STRTOOFF bb_strtoul |
| # define STRTOOFF strtoul |
| /* usage: printf("size: %"OFF_FMT"d (%"OFF_FMT"x)\n", sz, sz); */ |
| # define OFF_FMT "l" |
| # else |
| /* "long" is too short, need "long long" */ |
| # define XATOOFF(a) xatoull_range(a, 0, LLONG_MAX) |
| # define BB_STRTOOFF bb_strtoull |
| # define STRTOOFF strtoull |
| # define OFF_FMT "ll" |
| # endif |
| #else |
| /* CONFIG_LFS is off */ |
| # if UINT_MAX == 0xffffffff |
| /* While sizeof(off_t) == sizeof(int), off_t is typedef'ed to long anyway. |
| * gcc will throw warnings on printf("%d", off_t). Crap... */ |
| # define XATOOFF(a) xatoi_u(a) |
| # define BB_STRTOOFF bb_strtou |
| # define STRTOOFF strtol |
| # define OFF_FMT "l" |
| # else |
| # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX) |
| # define BB_STRTOOFF bb_strtoul |
| # define STRTOOFF strtol |
| # define OFF_FMT "l" |
| # endif |
| #endif |
| /* scary. better ideas? (but do *test* them first!) */ |
| #define OFF_T_MAX ((off_t)~((off_t)1 << (sizeof(off_t)*8-1))) |
| |
| /* Some useful definitions */ |
| #undef FALSE |
| #define FALSE ((int) 0) |
| #undef TRUE |
| #define TRUE ((int) 1) |
| #undef SKIP |
| #define SKIP ((int) 2) |
| |
| /* for mtab.c */ |
| #define MTAB_GETMOUNTPT '1' |
| #define MTAB_GETDEVICE '2' |
| |
| #define BUF_SIZE 8192 |
| #define EXPAND_ALLOC 1024 |
| |
| /* Macros for min/max. */ |
| #ifndef MIN |
| #define MIN(a,b) (((a)<(b))?(a):(b)) |
| #endif |
| |
| #ifndef MAX |
| #define MAX(a,b) (((a)>(b))?(a):(b)) |
| #endif |
| |
| /* buffer allocation schemes */ |
| #if ENABLE_FEATURE_BUFFERS_GO_ON_STACK |
| #define RESERVE_CONFIG_BUFFER(buffer,len) char buffer[len] |
| #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char buffer[len] |
| #define RELEASE_CONFIG_BUFFER(buffer) ((void)0) |
| #else |
| #if ENABLE_FEATURE_BUFFERS_GO_IN_BSS |
| #define RESERVE_CONFIG_BUFFER(buffer,len) static char buffer[len] |
| #define RESERVE_CONFIG_UBUFFER(buffer,len) static unsigned char buffer[len] |
| #define RELEASE_CONFIG_BUFFER(buffer) ((void)0) |
| #else |
| #define RESERVE_CONFIG_BUFFER(buffer,len) char *buffer = xmalloc(len) |
| #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char *buffer = xmalloc(len) |
| #define RELEASE_CONFIG_BUFFER(buffer) free(buffer) |
| #endif |
| #endif |
| |
| #if defined(__GLIBC__) |
| /* glibc uses __errno_location() to get a ptr to errno */ |
| /* We can just memorize it once - no multithreading in busybox :) */ |
| extern int *const bb_errno; |
| #undef errno |
| #define errno (*bb_errno) |
| #endif |
| |
| unsigned long long monotonic_us(void); |
| unsigned monotonic_sec(void); |
| |
| extern void chomp(char *s); |
| extern void trim(char *s); |
| extern char *skip_whitespace(const char *); |
| extern char *skip_non_whitespace(const char *); |
| |
| //TODO: supply a pointer to char[11] buffer (avoid statics)? |
| extern const char *bb_mode_string(mode_t mode); |
| extern int is_directory(const char *name, int followLinks, struct stat *statBuf); |
| enum { /* DO NOT CHANGE THESE VALUES! cp.c, mv.c, install.c depend on them. */ |
| FILEUTILS_PRESERVE_STATUS = 1, |
| FILEUTILS_DEREFERENCE = 2, |
| FILEUTILS_RECUR = 4, |
| FILEUTILS_FORCE = 8, |
| FILEUTILS_INTERACTIVE = 0x10, |
| FILEUTILS_MAKE_HARDLINK = 0x20, |
| FILEUTILS_MAKE_SOFTLINK = 0x40, |
| FILEUTILS_DEREF_SOFTLINK = 0x80, |
| #if ENABLE_SELINUX |
| FILEUTILS_PRESERVE_SECURITY_CONTEXT = 0x100, |
| FILEUTILS_SET_SECURITY_CONTEXT = 0x200 |
| #endif |
| }; |
| #define FILEUTILS_CP_OPTSTR "pdRfilsL" USE_SELINUX("c") |
| extern int remove_file(const char *path, int flags); |
| /* NB: without FILEUTILS_RECUR in flags, it will basically "cat" |
| * the source, not copy (unless "source" is a directory). |
| * This makes "cp /dev/null file" and "install /dev/null file" (!!!) |
| * work coreutils-compatibly. */ |
| extern int copy_file(const char *source, const char *dest, int flags); |
| |
| enum { |
| ACTION_RECURSE = (1 << 0), |
| ACTION_FOLLOWLINKS = (1 << 1), |
| ACTION_FOLLOWLINKS_L0 = (1 << 2), |
| ACTION_DEPTHFIRST = (1 << 3), |
| /*ACTION_REVERSE = (1 << 4), - unused */ |
| }; |
| extern int recursive_action(const char *fileName, unsigned flags, |
| int (*fileAction) (const char *fileName, struct stat* statbuf, void* userData, int depth), |
| int (*dirAction) (const char *fileName, struct stat* statbuf, void* userData, int depth), |
| void* userData, unsigned depth); |
| extern int device_open(const char *device, int mode); |
| enum { GETPTY_BUFSIZE = 16 }; /* more than enough for "/dev/ttyXXX" */ |
| extern int getpty(char *line); |
| extern int get_console_fd(void); |
| extern char *find_block_device(const char *path); |
| /* bb_copyfd_XX print read/write errors and return -1 if they occur */ |
| extern off_t bb_copyfd_eof(int fd1, int fd2); |
| extern off_t bb_copyfd_size(int fd1, int fd2, off_t size); |
| extern void bb_copyfd_exact_size(int fd1, int fd2, off_t size); |
| /* "short" copy can be detected by return value < size */ |
| /* this helper yells "short read!" if param is not -1 */ |
| extern void complain_copyfd_and_die(off_t sz) ATTRIBUTE_NORETURN; |
| extern char bb_process_escape_sequence(const char **ptr); |
| /* xxxx_strip version can modify its parameter: |
| * "/" -> "/" |
| * "abc" -> "abc" |
| * "abc/def" -> "def" |
| * "abc/def/" -> "def" !! |
| */ |
| extern char *bb_get_last_path_component_strip(char *path); |
| /* "abc/def/" -> "" and it never modifies 'path' */ |
| extern char *bb_get_last_path_component_nostrip(const char *path); |
| |
| int ndelay_on(int fd); |
| int ndelay_off(int fd); |
| int close_on_exec_on(int fd); |
| void xdup2(int, int); |
| void xmove_fd(int, int); |
| |
| |
| DIR *xopendir(const char *path); |
| DIR *warn_opendir(const char *path); |
| |
| /* UNUSED: char *xmalloc_realpath(const char *path); */ |
| char *xmalloc_readlink(const char *path); |
| char *xmalloc_readlink_or_warn(const char *path); |
| char *xrealloc_getcwd_or_warn(char *cwd); |
| |
| char *xmalloc_follow_symlinks(const char *path); |
| |
| |
| enum { |
| /* bb_signals(BB_FATAL_SIGS, handler) catches all signals which |
| * otherwise would kill us, except for those resulting from bugs: |
| * SIGSEGV, SIGILL, SIGFPE. |
| * Other fatal signals not included (TODO?): |
| * SIGBUS Bus error (bad memory access) |
| * SIGPOLL Pollable event. Synonym of SIGIO |
| * SIGPROF Profiling timer expired |
| * SIGSYS Bad argument to routine |
| * SIGTRAP Trace/breakpoint trap |
| * |
| * The only known arch with some of these sigs not fitting |
| * into 32 bits is parisc (SIGXCPU=33, SIGXFSZ=34, SIGSTKFLT=36). |
| * Dance around with long long to guard against that... |
| */ |
| BB_FATAL_SIGS = (int)(0 |
| + (1LL << SIGHUP) |
| + (1LL << SIGINT) |
| + (1LL << SIGTERM) |
| + (1LL << SIGPIPE) // Write to pipe with no readers |
| + (1LL << SIGQUIT) // Quit from keyboard |
| + (1LL << SIGABRT) // Abort signal from abort(3) |
| + (1LL << SIGALRM) // Timer signal from alarm(2) |
| + (1LL << SIGVTALRM) // Virtual alarm clock |
| + (1LL << SIGXCPU) // CPU time limit exceeded |
| + (1LL << SIGXFSZ) // File size limit exceeded |
| + (1LL << SIGUSR1) // Yes kids, these are also fatal! |
| + (1LL << SIGUSR2) |
| + 0), |
| }; |
| void bb_signals(int sigs, void (*f)(int)); |
| /* Unlike signal() and bb_signals, sets handler with sigaction() |
| * and in a way that while signal handler is run, no other signals |
| * will be blocked: */ |
| void bb_signals_recursive(int sigs, void (*f)(int)); |
| /* syscalls like read() will be interrupted with EINTR: */ |
| void signal_no_SA_RESTART_empty_mask(int sig, void (*handler)(int)); |
| /* syscalls like read() won't be interrupted (though select/poll will be): */ |
| void signal_SA_RESTART_empty_mask(int sig, void (*handler)(int)); |
| void wait_for_any_sig(void); |
| void kill_myself_with_sig(int sig) ATTRIBUTE_NORETURN; |
| void sig_block(int sig); |
| void sig_unblock(int sig); |
| /* Will do sigaction(signum, act, NULL): */ |
| int sigaction_set(int sig, const struct sigaction *act); |
| /* SIG_BLOCK/SIG_UNBLOCK all signals: */ |
| int sigprocmask_allsigs(int how); |
| |
| |
| void xsetgid(gid_t gid); |
| void xsetuid(uid_t uid); |
| void xchdir(const char *path); |
| void xchroot(const char *path); |
| void xsetenv(const char *key, const char *value); |
| void xunlink(const char *pathname); |
| void xstat(const char *pathname, struct stat *buf); |
| int xopen(const char *pathname, int flags); |
| int xopen3(const char *pathname, int flags, int mode); |
| int open_or_warn(const char *pathname, int flags); |
| int open3_or_warn(const char *pathname, int flags, int mode); |
| int open_or_warn_stdin(const char *pathname); |
| void xrename(const char *oldpath, const char *newpath); |
| int rename_or_warn(const char *oldpath, const char *newpath); |
| off_t xlseek(int fd, off_t offset, int whence); |
| off_t fdlength(int fd); |
| |
| void xpipe(int filedes[2]); |
| /* In this form code with pipes is much more readable */ |
| struct fd_pair { int rd; int wr; }; |
| #define piped_pair(pair) pipe(&((pair).rd)) |
| #define xpiped_pair(pair) xpipe(&((pair).rd)) |
| |
| /* Useful for having small structure members/global variables */ |
| typedef int8_t socktype_t; |
| typedef int8_t family_t; |
| struct BUG_too_small { |
| char BUG_socktype_t_too_small[(0 |
| | SOCK_STREAM |
| | SOCK_DGRAM |
| | SOCK_RDM |
| | SOCK_SEQPACKET |
| | SOCK_RAW |
| ) <= 127 ? 1 : -1]; |
| char BUG_family_t_too_small[(0 |
| | AF_UNSPEC |
| | AF_INET |
| | AF_INET6 |
| | AF_UNIX |
| #ifdef AF_PACKET |
| | AF_PACKET |
| #endif |
| #ifdef AF_NETLINK |
| | AF_NETLINK |
| #endif |
| /* | AF_DECnet */ |
| /* | AF_IPX */ |
| ) <= 127 ? 1 : -1]; |
| }; |
| |
| |
| int xsocket(int domain, int type, int protocol); |
| void xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen); |
| void xlisten(int s, int backlog); |
| void xconnect(int s, const struct sockaddr *s_addr, socklen_t addrlen); |
| ssize_t xsendto(int s, const void *buf, size_t len, const struct sockaddr *to, |
| socklen_t tolen); |
| /* SO_REUSEADDR allows a server to rebind to an address that is already |
| * "in use" by old connections to e.g. previous server instance which is |
| * killed or crashed. Without it bind will fail until all such connections |
| * time out. Linux does not allow multiple live binds on same ip:port |
| * regardless of SO_REUSEADDR (unlike some other flavors of Unix). |
| * Turn it on before you call bind(). */ |
| void setsockopt_reuseaddr(int fd); /* On Linux this never fails. */ |
| int setsockopt_broadcast(int fd); |
| /* NB: returns port in host byte order */ |
| unsigned bb_lookup_port(const char *port, const char *protocol, unsigned default_port); |
| typedef struct len_and_sockaddr { |
| socklen_t len; |
| union { |
| struct sockaddr sa; |
| struct sockaddr_in sin; |
| #if ENABLE_FEATURE_IPV6 |
| struct sockaddr_in6 sin6; |
| #endif |
| } u; |
| } len_and_sockaddr; |
| enum { |
| LSA_LEN_SIZE = offsetof(len_and_sockaddr, u), |
| LSA_SIZEOF_SA = sizeof( |
| union { |
| struct sockaddr sa; |
| struct sockaddr_in sin; |
| #if ENABLE_FEATURE_IPV6 |
| struct sockaddr_in6 sin6; |
| #endif |
| } |
| ) |
| }; |
| /* Create stream socket, and allocate suitable lsa. |
| * (lsa of correct size and lsa->sa.sa_family (AF_INET/AF_INET6)) |
| * af == AF_UNSPEC will result in trying to create IPv6 socket, |
| * and if kernel doesn't support it, IPv4. |
| */ |
| #if ENABLE_FEATURE_IPV6 |
| int xsocket_type(len_and_sockaddr **lsap, int af, int sock_type); |
| #else |
| int xsocket_type(len_and_sockaddr **lsap, int sock_type); |
| #define xsocket_type(lsap, af, sock_type) xsocket_type((lsap), (sock_type)) |
| #endif |
| int xsocket_stream(len_and_sockaddr **lsap); |
| /* Create server socket bound to bindaddr:port. bindaddr can be NULL, |
| * numeric IP ("N.N.N.N") or numeric IPv6 address, |
| * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT"). |
| * Only if there is no suffix, port argument is used */ |
| /* NB: these set SO_REUSEADDR before bind */ |
| int create_and_bind_stream_or_die(const char *bindaddr, int port); |
| int create_and_bind_dgram_or_die(const char *bindaddr, int port); |
| /* Create client TCP socket connected to peer:port. Peer cannot be NULL. |
| * Peer can be numeric IP ("N.N.N.N"), numeric IPv6 address or hostname, |
| * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT"). |
| * If there is no suffix, port argument is used */ |
| int create_and_connect_stream_or_die(const char *peer, int port); |
| /* Connect to peer identified by lsa */ |
| int xconnect_stream(const len_and_sockaddr *lsa); |
| /* Return malloc'ed len_and_sockaddr with socket address of host:port |
| * Currently will return IPv4 or IPv6 sockaddrs only |
| * (depending on host), but in theory nothing prevents e.g. |
| * UNIX socket address being returned, IPX sockaddr etc... |
| * On error does bb_error_msg and returns NULL */ |
| len_and_sockaddr* host2sockaddr(const char *host, int port); |
| /* Version which dies on error */ |
| len_and_sockaddr* xhost2sockaddr(const char *host, int port); |
| len_and_sockaddr* xdotted2sockaddr(const char *host, int port); |
| /* Same, useful if you want to force family (e.g. IPv6) */ |
| #if !ENABLE_FEATURE_IPV6 |
| #define host_and_af2sockaddr(host, port, af) host2sockaddr((host), (port)) |
| #define xhost_and_af2sockaddr(host, port, af) xhost2sockaddr((host), (port)) |
| #else |
| len_and_sockaddr* host_and_af2sockaddr(const char *host, int port, sa_family_t af); |
| len_and_sockaddr* xhost_and_af2sockaddr(const char *host, int port, sa_family_t af); |
| #endif |
| /* Assign sin[6]_port member if the socket is an AF_INET[6] one, |
| * otherwise no-op. Useful for ftp. |
| * NB: does NOT do htons() internally, just direct assignment. */ |
| void set_nport(len_and_sockaddr *lsa, unsigned port); |
| /* Retrieve sin[6]_port or return -1 for non-INET[6] lsa's */ |
| int get_nport(const struct sockaddr *sa); |
| /* Reverse DNS. Returns NULL on failure. */ |
| char* xmalloc_sockaddr2host(const struct sockaddr *sa); |
| /* This one doesn't append :PORTNUM */ |
| char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa); |
| /* This one also doesn't fall back to dotted IP (returns NULL) */ |
| char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa); |
| /* inet_[ap]ton on steroids */ |
| char* xmalloc_sockaddr2dotted(const struct sockaddr *sa); |
| char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa); |
| // "old" (ipv4 only) API |
| // users: traceroute.c hostname.c - use _list_ of all IPs |
| struct hostent *xgethostbyname(const char *name); |
| // Also mount.c and inetd.c are using gethostbyname(), |
| // + inet_common.c has additional IPv4-only stuff |
| |
| |
| void socket_want_pktinfo(int fd); |
| ssize_t send_to_from(int fd, void *buf, size_t len, int flags, |
| const struct sockaddr *to, |
| const struct sockaddr *from, |
| socklen_t tolen); |
| ssize_t recv_from_to(int fd, void *buf, size_t len, int flags, |
| struct sockaddr *from, |
| struct sockaddr *to, |
| socklen_t sa_size); |
| |
| char *xstrdup(const char *s); |
| char *xstrndup(const char *s, int n); |
| char *safe_strncpy(char *dst, const char *src, size_t size); |
| /* Guaranteed to NOT be a macro (smallest code). Saves nearly 2k on uclibc. |
| * But potentially slow, don't use in one-billion-times loops */ |
| int bb_putchar(int ch); |
| char *xasprintf(const char *format, ...) __attribute__ ((format (printf, 1, 2))); |
| /* Prints unprintable chars ch as ^C or M-c to file |
| * (M-c is used only if ch is ORed with PRINTABLE_META), |
| * else it is printed as-is (except for ch = 0x9b) */ |
| enum { PRINTABLE_META = 0x100 }; |
| void fputc_printable(int ch, FILE *file); |
| // gcc-4.1.1 still isn't good enough at optimizing it |
| // (+200 bytes compared to macro) |
| //static ALWAYS_INLINE |
| //int LONE_DASH(const char *s) { return s[0] == '-' && !s[1]; } |
| //static ALWAYS_INLINE |
| //int NOT_LONE_DASH(const char *s) { return s[0] != '-' || s[1]; } |
| #define LONE_DASH(s) ((s)[0] == '-' && !(s)[1]) |
| #define NOT_LONE_DASH(s) ((s)[0] != '-' || (s)[1]) |
| #define LONE_CHAR(s,c) ((s)[0] == (c) && !(s)[1]) |
| #define NOT_LONE_CHAR(s,c) ((s)[0] != (c) || (s)[1]) |
| #define DOT_OR_DOTDOT(s) ((s)[0] == '.' && (!(s)[1] || ((s)[1] == '.' && !(s)[2]))) |
| |
| /* dmalloc will redefine these to it's own implementation. It is safe |
| * to have the prototypes here unconditionally. */ |
| extern void *malloc_or_warn(size_t size); |
| extern void *xmalloc(size_t size); |
| extern void *xzalloc(size_t size); |
| extern void *xrealloc(void *old, size_t size); |
| |
| extern ssize_t safe_read(int fd, void *buf, size_t count); |
| extern ssize_t nonblock_safe_read(int fd, void *buf, size_t count); |
| // NB: will return short read on error, not -1, |
| // if some data was read before error occurred |
| extern ssize_t full_read(int fd, void *buf, size_t count); |
| extern void xread(int fd, void *buf, size_t count); |
| extern unsigned char xread_char(int fd); |
| // Reads one line a-la fgets (but doesn't save terminating '\n'). |
| // Uses single full_read() call, works only on seekable streams. |
| extern char *reads(int fd, char *buf, size_t count); |
| // Reads one line a-la fgets (but doesn't save terminating '\n'). |
| // Reads byte-by-byte. Useful when it is important to not read ahead. |
| // Bytes are appended to pfx (which must be malloced, or NULL). |
| extern char *xmalloc_reads(int fd, char *pfx, size_t *maxsz_p); |
| extern ssize_t read_close(int fd, void *buf, size_t maxsz); |
| extern ssize_t open_read_close(const char *filename, void *buf, size_t maxsz); |
| /* Returns NULL if file can't be opened */ |
| extern void *xmalloc_open_read_close(const char *filename, size_t *maxsz_p); |
| /* Never returns NULL */ |
| extern void *xmalloc_xopen_read_close(const char *filename, size_t *maxsz_p); |
| |
| extern ssize_t safe_write(int fd, const void *buf, size_t count); |
| // NB: will return short write on error, not -1, |
| // if some data was written before error occurred |
| extern ssize_t full_write(int fd, const void *buf, size_t count); |
| extern void xwrite(int fd, const void *buf, size_t count); |
| |
| /* Reads and prints to stdout till eof, then closes FILE. Exits on error: */ |
| extern void xprint_and_close_file(FILE *file); |
| /* Reads up to (and including) TERMINATING_STRING: */ |
| extern char *xmalloc_fgets_str(FILE *file, const char *terminating_string); |
| /* Chops off TERMINATING_STRING from the end: */ |
| extern char *xmalloc_fgetline_str(FILE *file, const char *terminating_string); |
| /* Reads up to (and including) "\n" or NUL byte: */ |
| extern char *xmalloc_fgets(FILE *file); |
| /* Chops off '\n' from the end, unlike fgets: */ |
| extern char *xmalloc_fgetline(FILE *file); |
| extern char *bb_get_chunk_from_file(FILE *file, int *end); |
| extern void die_if_ferror(FILE *file, const char *msg); |
| extern void die_if_ferror_stdout(void); |
| extern void xfflush_stdout(void); |
| extern void fflush_stdout_and_exit(int retval) ATTRIBUTE_NORETURN; |
| extern int fclose_if_not_stdin(FILE *file); |
| extern FILE *xfopen(const char *filename, const char *mode); |
| /* Prints warning to stderr and returns NULL on failure: */ |
| extern FILE *fopen_or_warn(const char *filename, const char *mode); |
| /* "Opens" stdin if filename is special, else just opens file: */ |
| extern FILE *xfopen_stdin(const char *filename); |
| extern FILE *fopen_or_warn_stdin(const char *filename); |
| |
| int bb_pstrcmp(const void *a, const void *b); |
| void qsort_string_vector(char **sv, unsigned count); |
| |
| /* Wrapper which restarts poll on EINTR or ENOMEM. |
| * On other errors complains [perror("poll")] and returns. |
| * Warning! May take (much) longer than timeout_ms to return! |
| * If this is a problem, use bare poll and open-code EINTR/ENOMEM handling */ |
| int safe_poll(struct pollfd *ufds, nfds_t nfds, int timeout_ms); |
| |
| char *safe_gethostname(void); |
| |
| /* Convert each alpha char in str to lower-case */ |
| char* str_tolower(char *str); |
| |
| char *utoa(unsigned n); |
| char *itoa(int n); |
| /* Returns a pointer past the formatted number, does NOT null-terminate */ |
| char *utoa_to_buf(unsigned n, char *buf, unsigned buflen); |
| char *itoa_to_buf(int n, char *buf, unsigned buflen); |
| /* Intelligent formatters of bignums */ |
| void smart_ulltoa4(unsigned long long ul, char buf[5], const char *scale); |
| void smart_ulltoa5(unsigned long long ul, char buf[5], const char *scale); |
| //TODO: provide pointer to buf (avoid statics)? |
| const char *make_human_readable_str(unsigned long long size, |
| unsigned long block_size, unsigned long display_unit); |
| /* Put a string of hex bytes ("1b2e66fe"...), return advanced pointer */ |
| char *bin2hex(char *buf, const char *cp, int count); |
| |
| /* Last element is marked by mult == 0 */ |
| struct suffix_mult { |
| char suffix[4]; |
| unsigned mult; |
| }; |
| #include "xatonum.h" |
| /* Specialized: */ |
| /* Using xatoi() instead of naive atoi() is not always convenient - |
| * in many places people want *non-negative* values, but store them |
| * in signed int. Therefore we need this one: |
| * dies if input is not in [0, INT_MAX] range. Also will reject '-0' etc */ |
| int xatoi_u(const char *numstr); |
| /* Useful for reading port numbers */ |
| uint16_t xatou16(const char *numstr); |
| |
| |
| /* These parse entries in /etc/passwd and /etc/group. This is desirable |
| * for BusyBox since we want to avoid using the glibc NSS stuff, which |
| * increases target size and is often not needed on embedded systems. */ |
| long xuname2uid(const char *name); |
| long xgroup2gid(const char *name); |
| /* wrapper: allows string to contain numeric uid or gid */ |
| unsigned long get_ug_id(const char *s, long (*xname2id)(const char *)); |
| /* from chpst. Does not die, returns 0 on failure */ |
| struct bb_uidgid_t { |
| uid_t uid; |
| gid_t gid; |
| }; |
| /* always sets uid and gid */ |
| int get_uidgid(struct bb_uidgid_t*, const char*, int numeric_ok); |
| /* chown-like handling of "user[:[group]" */ |
| void parse_chown_usergroup_or_die(struct bb_uidgid_t *u, char *user_group); |
| /* bb_getpwuid, bb_getgrgid: |
| * bb_getXXXid(buf, bufsz, id) - copy user/group name or id |
| * as a string to buf, return user/group name or NULL |
| * bb_getXXXid(NULL, 0, id) - return user/group name or NULL |
| * bb_getXXXid(NULL, -1, id) - return user/group name or exit |
| */ |
| char *bb_getpwuid(char *name, int bufsize, long uid); |
| char *bb_getgrgid(char *group, int bufsize, long gid); |
| /* versions which cache results (useful for ps, ls etc) */ |
| const char* get_cached_username(uid_t uid); |
| const char* get_cached_groupname(gid_t gid); |
| void clear_username_cache(void); |
| /* internally usernames are saved in fixed-sized char[] buffers */ |
| enum { USERNAME_MAX_SIZE = 16 - sizeof(int) }; |
| #if ENABLE_FEATURE_CHECK_NAMES |
| void die_if_bad_username(const char* name); |
| #else |
| #define die_if_bad_username(name) ((void)(name)) |
| #endif |
| |
| int execable_file(const char *name); |
| char *find_execable(const char *filename); |
| int exists_execable(const char *filename); |
| |
| /* BB_EXECxx always execs (it's not doing NOFORK/NOEXEC stuff), |
| * but it may exec busybox and call applet instead of searching PATH. |
| */ |
| #if ENABLE_FEATURE_PREFER_APPLETS |
| int bb_execvp(const char *file, char *const argv[]); |
| #define BB_EXECVP(prog,cmd) bb_execvp(prog,cmd) |
| #define BB_EXECLP(prog,cmd,...) \ |
| execlp((find_applet_by_name(prog) >= 0) ? CONFIG_BUSYBOX_EXEC_PATH : prog, \ |
| cmd, __VA_ARGS__) |
| #else |
| #define BB_EXECVP(prog,cmd) execvp(prog,cmd) |
| #define BB_EXECLP(prog,cmd,...) execlp(prog,cmd, __VA_ARGS__) |
| #endif |
| |
| /* NOMMU friendy fork+exec */ |
| pid_t spawn(char **argv); |
| pid_t xspawn(char **argv); |
| |
| int safe_waitpid(int pid, int *wstat, int options); |
| /* Unlike waitpid, waits ONLY for one process. |
| * It's safe to pass negative 'pids' from failed [v]fork - |
| * wait4pid will return -1 (and will not clobber [v]fork's errno). |
| * IOW: rc = wait4pid(spawn(argv)); |
| * if (rc < 0) bb_perror_msg("%s", argv[0]); |
| * if (rc > 0) bb_error_msg("exit code: %d", rc); |
| */ |
| int wait4pid(int pid); |
| int wait_any_nohang(int *wstat); |
| #define wait_crashed(w) ((w) & 127) |
| #define wait_exitcode(w) ((w) >> 8) |
| #define wait_stopsig(w) ((w) >> 8) |
| #define wait_stopped(w) (((w) & 127) == 127) |
| /* wait4pid(spawn(argv)) + NOFORK/NOEXEC (if configured) */ |
| int spawn_and_wait(char **argv); |
| struct nofork_save_area { |
| jmp_buf die_jmp; |
| const char *applet_name; |
| int xfunc_error_retval; |
| uint32_t option_mask32; |
| int die_sleep; |
| smallint saved; |
| }; |
| void save_nofork_data(struct nofork_save_area *save); |
| void restore_nofork_data(struct nofork_save_area *save); |
| /* Does NOT check that applet is NOFORK, just blindly runs it */ |
| int run_nofork_applet(int applet_no, char **argv); |
| int run_nofork_applet_prime(struct nofork_save_area *old, int applet_no, char **argv); |
| |
| /* Helpers for daemonization. |
| * |
| * bb_daemonize(flags) = daemonize, does not compile on NOMMU |
| * |
| * bb_daemonize_or_rexec(flags, argv) = daemonizes on MMU (and ignores argv), |
| * rexec's itself on NOMMU with argv passed as command line. |
| * Thus bb_daemonize_or_rexec may cause your <applet>_main() to be re-executed |
| * from the start. (It will detect it and not reexec again second time). |
| * You have to audit carefully that you don't do something twice as a result |
| * (opening files/sockets, parsing config files etc...)! |
| * |
| * Both of the above will redirect fd 0,1,2 to /dev/null and drop ctty |
| * (will do setsid()). |
| * |
| * forkexit_or_rexec(argv) = bare-bones "fork + parent exits" on MMU, |
| * "vfork + re-exec ourself" on NOMMU. No fd redirection, no setsid(). |
| * Currently used for openvt and setsid. On MMU ignores argv. |
| * |
| * Helper for network daemons in foreground mode: |
| * |
| * bb_sanitize_stdio() = make sure that fd 0,1,2 are opened by opening them |
| * to /dev/null if they are not. |
| */ |
| enum { |
| DAEMON_CHDIR_ROOT = 1, |
| DAEMON_DEVNULL_STDIO = 2, |
| DAEMON_CLOSE_EXTRA_FDS = 4, |
| DAEMON_ONLY_SANITIZE = 8, /* internal use */ |
| }; |
| #if BB_MMU |
| void forkexit_or_rexec(void); |
| enum { re_execed = 0 }; |
| # define forkexit_or_rexec(argv) forkexit_or_rexec() |
| # define bb_daemonize_or_rexec(flags, argv) bb_daemonize_or_rexec(flags) |
| # define bb_daemonize(flags) bb_daemonize_or_rexec(flags, bogus) |
| #else |
| void re_exec(char **argv) ATTRIBUTE_NORETURN; |
| void forkexit_or_rexec(char **argv); |
| extern bool re_execed; |
| int BUG_fork_is_unavailable_on_nommu(void); |
| int BUG_daemon_is_unavailable_on_nommu(void); |
| void BUG_bb_daemonize_is_unavailable_on_nommu(void); |
| # define fork() BUG_fork_is_unavailable_on_nommu() |
| # define daemon(a,b) BUG_daemon_is_unavailable_on_nommu() |
| # define bb_daemonize(a) BUG_bb_daemonize_is_unavailable_on_nommu() |
| #endif |
| void bb_daemonize_or_rexec(int flags, char **argv); |
| void bb_sanitize_stdio(void); |
| /* Clear dangerous stuff, set PATH. Return 1 if was run by different user. */ |
| int sanitize_env_if_suid(void); |
| |
| |
| extern const char *const bb_argv_dash[]; /* "-", NULL */ |
| extern const char *opt_complementary; |
| #if ENABLE_GETOPT_LONG |
| #define No_argument "\0" |
| #define Required_argument "\001" |
| #define Optional_argument "\002" |
| extern const char *applet_long_options; |
| #endif |
| extern uint32_t option_mask32; |
| extern uint32_t getopt32(char **argv, const char *applet_opts, ...); |
| |
| |
| typedef struct llist_t { |
| char *data; |
| struct llist_t *link; |
| } llist_t; |
| void llist_add_to(llist_t **old_head, void *data); |
| void llist_add_to_end(llist_t **list_head, void *data); |
| void *llist_pop(llist_t **elm); |
| void llist_unlink(llist_t **head, llist_t *elm); |
| void llist_free(llist_t *elm, void (*freeit)(void *data)); |
| llist_t *llist_rev(llist_t *list); |
| /* BTW, surprisingly, changing API to |
| * llist_t *llist_add_to(llist_t *old_head, void *data) |
| * etc does not result in smaller code... */ |
| |
| /* start_stop_daemon and udhcpc are special - they want |
| * to create pidfiles regardless of FEATURE_PIDFILE */ |
| #if ENABLE_FEATURE_PIDFILE || defined(WANT_PIDFILE) |
| /* True only if we created pidfile which is *file*, not /dev/null etc */ |
| extern smallint wrote_pidfile; |
| void write_pidfile(const char *path); |
| #define remove_pidfile(path) do { if (wrote_pidfile) unlink(path); } while (0) |
| #else |
| enum { wrote_pidfile = 0 }; |
| #define write_pidfile(path) ((void)0) |
| #define remove_pidfile(path) ((void)0) |
| #endif |
| |
| enum { |
| LOGMODE_NONE = 0, |
| LOGMODE_STDIO = (1 << 0), |
| LOGMODE_SYSLOG = (1 << 1) * ENABLE_FEATURE_SYSLOG, |
| LOGMODE_BOTH = LOGMODE_SYSLOG + LOGMODE_STDIO, |
| }; |
| extern const char *msg_eol; |
| extern smallint logmode; |
| extern int die_sleep; |
| extern int xfunc_error_retval; |
| extern jmp_buf die_jmp; |
| extern void xfunc_die(void) ATTRIBUTE_NORETURN; |
| extern void bb_show_usage(void) ATTRIBUTE_NORETURN; |
| extern void bb_error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))); |
| extern void bb_error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))); |
| extern void bb_perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))); |
| extern void bb_simple_perror_msg(const char *s); |
| extern void bb_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))); |
| extern void bb_simple_perror_msg_and_die(const char *s) __attribute__ ((noreturn)); |
| extern void bb_herror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))); |
| extern void bb_herror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))); |
| extern void bb_perror_nomsg_and_die(void) ATTRIBUTE_NORETURN; |
| extern void bb_perror_nomsg(void); |
| extern void bb_info_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))); |
| extern void bb_verror_msg(const char *s, va_list p, const char *strerr); |
| |
| /* We need to export XXX_main from libbusybox |
| * only if we build "individual" binaries |
| */ |
| #if ENABLE_FEATURE_INDIVIDUAL |
| #define MAIN_EXTERNALLY_VISIBLE EXTERNALLY_VISIBLE |
| #else |
| #define MAIN_EXTERNALLY_VISIBLE |
| #endif |
| |
| |
| /* applets which are useful from another applets */ |
| int bb_cat(char** argv); |
| /* If shell needs them, these three "exist" even if not enabled as applets */ |
| int echo_main(int argc, char** argv) USE_ECHO(MAIN_EXTERNALLY_VISIBLE); |
| int test_main(int argc, char **argv) USE_TEST(MAIN_EXTERNALLY_VISIBLE); |
| int kill_main(int argc, char **argv) USE_KILL(MAIN_EXTERNALLY_VISIBLE); |
| int chown_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| int gunzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| int bunzip2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| int bbunpack(char **argv, |
| char* (*make_new_name)(char *filename), |
| USE_DESKTOP(long long) int (*unpacker)(void) |
| ); |
| #if ENABLE_ROUTE |
| void bb_displayroutes(int noresolve, int netstatfmt); |
| #endif |
| |
| |
| /* Networking */ |
| int create_icmp_socket(void); |
| int create_icmp6_socket(void); |
| /* interface.c */ |
| /* This structure defines protocol families and their handlers. */ |
| struct aftype { |
| const char *name; |
| const char *title; |
| int af; |
| int alen; |
| char *(*print) (unsigned char *); |
| const char *(*sprint) (struct sockaddr *, int numeric); |
| int (*input) (/*int type,*/ const char *bufp, struct sockaddr *); |
| void (*herror) (char *text); |
| int (*rprint) (int options); |
| int (*rinput) (int typ, int ext, char **argv); |
| |
| /* may modify src */ |
| int (*getmask) (char *src, struct sockaddr * mask, char *name); |
| }; |
| /* This structure defines hardware protocols and their handlers. */ |
| struct hwtype { |
| const char *name; |
| const char *title; |
| int type; |
| int alen; |
| char *(*print) (unsigned char *); |
| int (*input) (const char *, struct sockaddr *); |
| int (*activate) (int fd); |
| int suppress_null_addr; |
| }; |
| extern smallint interface_opt_a; |
| int display_interfaces(char *ifname); |
| const struct aftype *get_aftype(const char *name); |
| const struct hwtype *get_hwtype(const char *name); |
| const struct hwtype *get_hwntype(int type); |
| |
| |
| #ifndef BUILD_INDIVIDUAL |
| extern int find_applet_by_name(const char *name); |
| /* Returns only if applet is not found. */ |
| extern void run_applet_and_exit(const char *name, char **argv); |
| extern void run_applet_no_and_exit(int a, char **argv) ATTRIBUTE_NORETURN; |
| #endif |
| |
| #ifdef HAVE_MNTENT_H |
| extern int match_fstype(const struct mntent *mt, const char *fstypes); |
| extern struct mntent *find_mount_point(const char *name, const char *table); |
| #endif |
| extern void erase_mtab(const char * name); |
| extern unsigned int tty_baud_to_value(speed_t speed); |
| extern speed_t tty_value_to_baud(unsigned int value); |
| extern void bb_warn_ignoring_args(int n); |
| |
| extern int get_linux_version_code(void); |
| |
| extern char *query_loop(const char *device); |
| extern int del_loop(const char *device); |
| /* If *devname is not NULL, use that name, otherwise try to find free one, |
| * malloc and return it in *devname. |
| * return value: 1: read-only loopdev was setup, 0: rw, < 0: error */ |
| extern int set_loop(char **devname, const char *file, unsigned long long offset); |
| |
| |
| //TODO: pass buf pointer or return allocated buf (avoid statics)? |
| char *bb_askpass(int timeout, const char * prompt); |
| int bb_ask_confirmation(void); |
| |
| extern int bb_parse_mode(const char* s, mode_t* theMode); |
| |
| /* Concatenate path and filename to new allocated buffer. |
| * Add "/" only as needed (no duplicate "//" are produced). |
| * If path is NULL, it is assumed to be "/". |
| * filename should not be NULL. */ |
| char *concat_path_file(const char *path, const char *filename); |
| char *concat_subpath_file(const char *path, const char *filename); |
| const char *bb_basename(const char *name); |
| /* NB: can violate const-ness (similarly to strchr) */ |
| char *last_char_is(const char *s, int c); |
| |
| |
| USE_DESKTOP(long long) int uncompress(int fd_in, int fd_out); |
| int inflate(int in, int out); |
| |
| |
| int bb_make_directory(char *path, long mode, int flags); |
| |
| int get_signum(const char *name); |
| const char *get_signame(int number); |
| void print_signames(void); |
| |
| char *bb_simplify_path(const char *path); |
| |
| #define FAIL_DELAY 3 |
| extern void bb_do_delay(int seconds); |
| extern void change_identity(const struct passwd *pw); |
| extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args) ATTRIBUTE_NORETURN; |
| extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args); |
| #if ENABLE_SELINUX |
| extern void renew_current_security_context(void); |
| extern void set_current_security_context(security_context_t sid); |
| extern context_t set_security_context_component(security_context_t cur_context, |
| char *user, char *role, char *type, char *range); |
| extern void setfscreatecon_or_die(security_context_t scontext); |
| extern void selinux_preserve_fcontext(int fdesc); |
| #else |
| #define selinux_preserve_fcontext(fdesc) ((void)0) |
| #endif |
| extern void selinux_or_die(void); |
| extern int restricted_shell(const char *shell); |
| |
| /* setup_environment: |
| * if clear_env = 1: cd(pw->pw_dir), clear environment, then set |
| * TERM=(old value) |
| * USER=pw->pw_name, LOGNAME=pw->pw_name |
| * PATH=bb_default_[root_]path |
| * HOME=pw->pw_dir |
| * SHELL=shell |
| * else if change_env = 1: |
| * if not root (if pw->pw_uid != 0): |
| * USER=pw->pw_name, LOGNAME=pw->pw_name |
| * HOME=pw->pw_dir |
| * SHELL=shell |
| * else does nothing |
| */ |
| extern void setup_environment(const char *shell, int clear_env, int change_env, const struct passwd *pw); |
| extern int correct_password(const struct passwd *pw); |
| /* Returns a ptr to static storage */ |
| extern char *pw_encrypt(const char *clear, const char *salt); |
| extern int obscure(const char *old, const char *newval, const struct passwd *pwdp); |
| |
| int index_in_str_array(const char *const string_array[], const char *key); |
| int index_in_strings(const char *strings, const char *key); |
| int index_in_substr_array(const char *const string_array[], const char *key); |
| int index_in_substrings(const char *strings, const char *key); |
| const char *nth_string(const char *strings, int n); |
| |
| extern void print_login_issue(const char *issue_file, const char *tty); |
| extern void print_login_prompt(void); |
| |
| /* rnd is additional random input. New one is returned. |
| * Useful if you call crypt_make_salt many times in a row: |
| * rnd = crypt_make_salt(buf1, 4, 0); |
| * rnd = crypt_make_salt(buf2, 4, rnd); |
| * rnd = crypt_make_salt(buf3, 4, rnd); |
| * (otherwise we risk having same salt generated) |
| */ |
| extern int crypt_make_salt(char *p, int cnt, int rnd); |
| |
| /* Returns number of lines changed, or -1 on error */ |
| extern int update_passwd(const char *filename, const char *username, |
| const char *new_pw); |
| |
| /* NB: typically you want to pass fd 0, not 1. Think 'applet | grep something' */ |
| int get_terminal_width_height(int fd, int *width, int *height); |
| |
| /* NB: "unsigned request" is crucial! "int request" will break some arches! */ |
| int ioctl_or_perror(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))); |
| int ioctl_or_perror_and_die(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))); |
| #if ENABLE_IOCTL_HEX2STR_ERROR |
| int bb_ioctl_or_warn(int fd, unsigned request, void *argp, const char *ioctl_name); |
| int bb_xioctl(int fd, unsigned request, void *argp, const char *ioctl_name); |
| #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp,#request) |
| #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp,#request) |
| #else |
| int bb_ioctl_or_warn(int fd, unsigned request, void *argp); |
| int bb_xioctl(int fd, unsigned request, void *argp); |
| #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp) |
| #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp) |
| #endif |
| |
| char *is_in_ino_dev_hashtable(const struct stat *statbuf); |
| void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name); |
| void reset_ino_dev_hashtable(void); |
| #ifdef __GLIBC__ |
| /* At least glibc has horrendously large inline for this, so wrap it */ |
| unsigned long long bb_makedev(unsigned int major, unsigned int minor); |
| #undef makedev |
| #define makedev(a,b) bb_makedev(a,b) |
| #endif |
| |
| |
| #if ENABLE_FEATURE_EDITING |
| /* It's NOT just ENABLEd or disabled. It's a number: */ |
| #ifdef CONFIG_FEATURE_EDITING_HISTORY |
| #define MAX_HISTORY (CONFIG_FEATURE_EDITING_HISTORY + 0) |
| #else |
| #define MAX_HISTORY 0 |
| #endif |
| typedef struct line_input_t { |
| int flags; |
| const char *path_lookup; |
| #if MAX_HISTORY |
| int cnt_history; |
| int cur_history; |
| USE_FEATURE_EDITING_SAVEHISTORY(const char *hist_file;) |
| char *history[MAX_HISTORY + 1]; |
| #endif |
| } line_input_t; |
| enum { |
| DO_HISTORY = 1 * (MAX_HISTORY > 0), |
| SAVE_HISTORY = 2 * (MAX_HISTORY > 0) * ENABLE_FEATURE_EDITING_SAVEHISTORY, |
| TAB_COMPLETION = 4 * ENABLE_FEATURE_TAB_COMPLETION, |
| USERNAME_COMPLETION = 8 * ENABLE_FEATURE_USERNAME_COMPLETION, |
| VI_MODE = 0x10 * ENABLE_FEATURE_EDITING_VI, |
| WITH_PATH_LOOKUP = 0x20, |
| FOR_SHELL = DO_HISTORY | SAVE_HISTORY | TAB_COMPLETION | USERNAME_COMPLETION, |
| }; |
| line_input_t *new_line_input_t(int flags); |
| /* Returns: |
| * -1 on read errors or EOF, or on bare Ctrl-D, |
| * 0 on ctrl-C (the line entered is still returned in 'command'), |
| * >0 length of input string, including terminating '\n' |
| */ |
| int read_line_input(const char* prompt, char* command, int maxsize, line_input_t *state); |
| #else |
| int read_line_input(const char* prompt, char* command, int maxsize); |
| #define read_line_input(prompt, command, maxsize, state) \ |
| read_line_input(prompt, command, maxsize) |
| #endif |
| |
| |
| #ifndef COMM_LEN |
| #ifdef TASK_COMM_LEN |
| enum { COMM_LEN = TASK_COMM_LEN }; |
| #else |
| /* synchronize with sizeof(task_struct.comm) in /usr/include/linux/sched.h */ |
| enum { COMM_LEN = 16 }; |
| #endif |
| #endif |
| typedef struct procps_status_t { |
| DIR *dir; |
| uint8_t shift_pages_to_bytes; |
| uint8_t shift_pages_to_kb; |
| /* Fields are set to 0/NULL if failed to determine (or not requested) */ |
| char *argv0; |
| USE_SELINUX(char *context;) |
| /* Everything below must contain no ptrs to malloc'ed data: |
| * it is memset(0) for each process in procps_scan() */ |
| unsigned long vsz, rss; /* we round it to kbytes */ |
| unsigned long stime, utime; |
| unsigned long start_time; |
| unsigned pid; |
| unsigned ppid; |
| unsigned pgid; |
| unsigned sid; |
| unsigned uid; |
| unsigned gid; |
| unsigned tty_major,tty_minor; |
| #if ENABLE_FEATURE_TOPMEM |
| unsigned long mapped_rw; |
| unsigned long mapped_ro; |
| unsigned long shared_clean; |
| unsigned long shared_dirty; |
| unsigned long private_clean; |
| unsigned long private_dirty; |
| unsigned long stack; |
| #endif |
| char state[4]; |
| /* basename of executable in exec(2), read from /proc/N/stat |
| * (if executable is symlink or script, it is NOT replaced |
| * by link target or interpreter name) */ |
| char comm[COMM_LEN]; |
| /* user/group? - use passwd/group parsing functions */ |
| } procps_status_t; |
| enum { |
| PSSCAN_PID = 1 << 0, |
| PSSCAN_PPID = 1 << 1, |
| PSSCAN_PGID = 1 << 2, |
| PSSCAN_SID = 1 << 3, |
| PSSCAN_UIDGID = 1 << 4, |
| PSSCAN_COMM = 1 << 5, |
| /* PSSCAN_CMD = 1 << 6, - use read_cmdline instead */ |
| PSSCAN_ARGV0 = 1 << 7, |
| /* PSSCAN_EXE = 1 << 8, - not implemented */ |
| PSSCAN_STATE = 1 << 9, |
| PSSCAN_VSZ = 1 << 10, |
| PSSCAN_RSS = 1 << 11, |
| PSSCAN_STIME = 1 << 12, |
| PSSCAN_UTIME = 1 << 13, |
| PSSCAN_TTY = 1 << 14, |
| PSSCAN_SMAPS = (1 << 15) * ENABLE_FEATURE_TOPMEM, |
| PSSCAN_ARGVN = (1 << 16) * (ENABLE_PGREP | ENABLE_PKILL), |
| USE_SELINUX(PSSCAN_CONTEXT = 1 << 17,) |
| PSSCAN_START_TIME = 1 << 18, |
| /* These are all retrieved from proc/NN/stat in one go: */ |
| PSSCAN_STAT = PSSCAN_PPID | PSSCAN_PGID | PSSCAN_SID |
| | PSSCAN_COMM | PSSCAN_STATE |
| | PSSCAN_VSZ | PSSCAN_RSS |
| | PSSCAN_STIME | PSSCAN_UTIME | PSSCAN_START_TIME |
| | PSSCAN_TTY, |
| }; |
| //procps_status_t* alloc_procps_scan(void); |
| void free_procps_scan(procps_status_t* sp); |
| procps_status_t* procps_scan(procps_status_t* sp, int flags); |
| /* Format cmdline (up to col chars) into char buf[col+1] */ |
| /* Puts [comm] if cmdline is empty (-> process is a kernel thread) */ |
| void read_cmdline(char *buf, int col, unsigned pid, const char *comm); |
| pid_t *find_pid_by_name(const char* procName); |
| pid_t *pidlist_reverse(pid_t *pidList); |
| |
| |
| extern const char bb_uuenc_tbl_base64[]; |
| extern const char bb_uuenc_tbl_std[]; |
| void bb_uuencode(char *store, const void *s, int length, const char *tbl); |
| |
| typedef struct sha1_ctx_t { |
| uint32_t count[2]; |
| uint32_t hash[5]; |
| uint32_t wbuf[16]; |
| } sha1_ctx_t; |
| void sha1_begin(sha1_ctx_t *ctx); |
| void sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx); |
| void *sha1_end(void *resbuf, sha1_ctx_t *ctx); |
| |
| typedef struct md5_ctx_t { |
| uint32_t A; |
| uint32_t B; |
| uint32_t C; |
| uint32_t D; |
| uint64_t total; |
| uint32_t buflen; |
| char buffer[128]; |
| } md5_ctx_t; |
| void md5_begin(md5_ctx_t *ctx); |
| void md5_hash(const void *data, size_t length, md5_ctx_t *ctx); |
| void *md5_end(void *resbuf, md5_ctx_t *ctx); |
| |
| uint32_t *crc32_filltable(uint32_t *tbl256, int endian); |
| |
| |
| extern const char *applet_name; |
| /* "BusyBox vN.N.N (timestamp or extra_version)" */ |
| extern const char bb_banner[]; |
| extern const char bb_msg_memory_exhausted[]; |
| extern const char bb_msg_invalid_date[]; |
| extern const char bb_msg_read_error[]; |
| extern const char bb_msg_write_error[]; |
| extern const char bb_msg_unknown[]; |
| extern const char bb_msg_can_not_create_raw_socket[]; |
| extern const char bb_msg_perm_denied_are_you_root[]; |
| extern const char bb_msg_requires_arg[]; |
| extern const char bb_msg_invalid_arg[]; |
| extern const char bb_msg_standard_input[]; |
| extern const char bb_msg_standard_output[]; |
| |
| extern const char bb_str_default[]; |
| /* NB: (bb_hexdigits_upcase[i] | 0x20) -> lowercase hex digit */ |
| extern const char bb_hexdigits_upcase[]; |
| |
| extern const char bb_path_mtab_file[]; |
| extern const char bb_path_passwd_file[]; |
| extern const char bb_path_shadow_file[]; |
| extern const char bb_path_gshadow_file[]; |
| extern const char bb_path_group_file[]; |
| extern const char bb_path_motd_file[]; |
| extern const char bb_path_wtmp_file[]; |
| extern const char bb_dev_null[]; |
| extern const char bb_busybox_exec_path[]; |
| /* util-linux manpage says /sbin:/bin:/usr/sbin:/usr/bin, |
| * but I want to save a few bytes here */ |
| extern const char bb_PATH_root_path[]; /* "PATH=/sbin:/usr/sbin:/bin:/usr/bin" */ |
| #define bb_default_root_path (bb_PATH_root_path + sizeof("PATH")) |
| #define bb_default_path (bb_PATH_root_path + sizeof("PATH=/sbin:/usr/sbin")) |
| |
| extern const int const_int_0; |
| extern const int const_int_1; |
| |
| |
| #ifndef BUFSIZ |
| #define BUFSIZ 4096 |
| #endif |
| /* Providing hard guarantee on minimum size (think of BUFSIZ == 128) */ |
| enum { COMMON_BUFSIZE = (BUFSIZ >= 256*sizeof(void*) ? BUFSIZ+1 : 256*sizeof(void*)) }; |
| extern char bb_common_bufsiz1[COMMON_BUFSIZE]; |
| /* This struct is deliberately not defined. */ |
| /* See docs/keep_data_small.txt */ |
| struct globals; |
| /* '*const' ptr makes gcc optimize code much better. |
| * Magic prevents ptr_to_globals from going into rodata. |
| * If you want to assign a value, use SET_PTR_TO_GLOBALS(x) */ |
| extern struct globals *const ptr_to_globals; |
| /* At least gcc 3.4.6 on mipsel system needs optimization barrier */ |
| #define barrier() asm volatile("":::"memory") |
| #define SET_PTR_TO_GLOBALS(x) do { \ |
| (*(struct globals**)&ptr_to_globals) = (x); \ |
| barrier(); \ |
| } while (0) |
| |
| /* You can change LIBBB_DEFAULT_LOGIN_SHELL, but don't use it, |
| * use bb_default_login_shell and following defines. |
| * If you change LIBBB_DEFAULT_LOGIN_SHELL, |
| * don't forget to change increment constant. */ |
| #define LIBBB_DEFAULT_LOGIN_SHELL "-/bin/sh" |
| extern const char bb_default_login_shell[]; |
| /* "/bin/sh" */ |
| #define DEFAULT_SHELL (bb_default_login_shell+1) |
| /* "sh" */ |
| #define DEFAULT_SHELL_SHORT_NAME (bb_default_login_shell+6) |
| |
| |
| #if ENABLE_FEATURE_DEVFS |
| # define CURRENT_VC "/dev/vc/0" |
| # define VC_1 "/dev/vc/1" |
| # define VC_2 "/dev/vc/2" |
| # define VC_3 "/dev/vc/3" |
| # define VC_4 "/dev/vc/4" |
| # define VC_5 "/dev/vc/5" |
| #if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__) |
| /* Yes, this sucks, but both SH (including sh64) and H8 have a SCI(F) for their |
| respective serial ports .. as such, we can't use the common device paths for |
| these. -- PFM */ |
| # define SC_0 "/dev/ttsc/0" |
| # define SC_1 "/dev/ttsc/1" |
| # define SC_FORMAT "/dev/ttsc/%d" |
| #else |
| # define SC_0 "/dev/tts/0" |
| # define SC_1 "/dev/tts/1" |
| # define SC_FORMAT "/dev/tts/%d" |
| #endif |
| # define VC_FORMAT "/dev/vc/%d" |
| # define LOOP_FORMAT "/dev/loop/%d" |
| # define LOOP_NAMESIZE (sizeof("/dev/loop/") + sizeof(int)*3 + 1) |
| # define LOOP_NAME "/dev/loop/" |
| # define FB_0 "/dev/fb/0" |
| #else |
| # define CURRENT_VC "/dev/tty0" |
| # define VC_1 "/dev/tty1" |
| # define VC_2 "/dev/tty2" |
| # define VC_3 "/dev/tty3" |
| # define VC_4 "/dev/tty4" |
| # define VC_5 "/dev/tty5" |
| #if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__) |
| # define SC_0 "/dev/ttySC0" |
| # define SC_1 "/dev/ttySC1" |
| # define SC_FORMAT "/dev/ttySC%d" |
| #else |
| # define SC_0 "/dev/ttyS0" |
| # define SC_1 "/dev/ttyS1" |
| # define SC_FORMAT "/dev/ttyS%d" |
| #endif |
| # define VC_FORMAT "/dev/tty%d" |
| # define LOOP_FORMAT "/dev/loop%d" |
| # define LOOP_NAMESIZE (sizeof("/dev/loop") + sizeof(int)*3 + 1) |
| # define LOOP_NAME "/dev/loop" |
| # define FB_0 "/dev/fb0" |
| #endif |
| |
| /* The following devices are the same on devfs and non-devfs systems. */ |
| #define CURRENT_TTY "/dev/tty" |
| #define DEV_CONSOLE "/dev/console" |
| |
| |
| #ifndef RB_POWER_OFF |
| /* Stop system and switch power off if possible. */ |
| #define RB_POWER_OFF 0x4321fedc |
| #endif |
| |
| /* Make sure we call functions instead of macros. */ |
| #undef isalnum |
| #undef isalpha |
| #undef isascii |
| #undef isblank |
| #undef iscntrl |
| #undef isgraph |
| #undef islower |
| #undef isprint |
| #undef ispunct |
| #undef isspace |
| #undef isupper |
| #undef isxdigit |
| |
| /* This one is more efficient - we save ~400 bytes */ |
| #undef isdigit |
| #define isdigit(a) ((unsigned)((a) - '0') <= 9) |
| |
| #define ARRAY_SIZE(x) ((unsigned)(sizeof(x) / sizeof((x)[0]))) |
| |
| |
| #if __GNUC_PREREQ(4,1) |
| # pragma GCC visibility pop |
| #endif |
| |
| |
| #endif /* __LIBBUSYBOX_H__ */ |