| /* 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 <mntent.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 <strings.h> |
| #include <sys/ioctl.h> |
| #include <sys/mman.h> |
| #include <sys/socket.h> |
| #include <sys/stat.h> |
| #include <sys/statfs.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> |
| |
| #if ENABLE_SELINUX |
| #include <selinux/selinux.h> |
| #include <selinux/context.h> |
| #endif |
| |
| #if ENABLE_LOCALE_SUPPORT |
| #include <locale.h> |
| #else |
| #define setlocale(x,y) ((void)0) |
| #endif |
| |
| #include "pwd_.h" |
| #include "grp_.h" |
| /* ifdef it out, because it may include <shadow.h> */ |
| /* and we may not even _have_ <shadow.h>! */ |
| #if ENABLE_FEATURE_SHADOWPASSWDS |
| #include "shadow_.h" |
| #endif |
| |
| /* Try to pull in PATH_MAX */ |
| #include <limits.h> |
| #include <sys/param.h> |
| #ifndef PATH_MAX |
| #define PATH_MAX 256 |
| #endif |
| |
| /* Tested to work correctly (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 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__ < 2 |
| int vdprintf(int d, const char *format, va_list ap); |
| #endif |
| // 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); |
| |
| |
| 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); |
| extern int remove_file(const char *path, int flags); |
| extern int copy_file(const char *source, const char *dest, int flags); |
| enum { |
| ACTION_RECURSE = (1 << 0), |
| ACTION_FOLLOWLINKS = (1 << 1), |
| ACTION_DEPTHFIRST = (1 << 2), |
| /*ACTION_REVERSE = (1 << 3), - 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, const unsigned depth); |
| extern int device_open(const char *device, int mode); |
| 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); |
| /* TODO: sometimes modifies its parameter, which |
| * makes it rather inconvenient at times: */ |
| extern char *bb_get_last_path_component(char *path); |
| |
| int ndelay_on(int fd); |
| int ndelay_off(int fd); |
| void xmove_fd(int, int); |
| |
| |
| DIR *xopendir(const char *path); |
| DIR *warn_opendir(const char *path); |
| |
| char *xrealloc_getcwd_or_warn(char *cwd); |
| char *xmalloc_readlink_or_warn(const char *path); |
| char *xmalloc_realpath(const char *path); |
| |
| |
| //TODO: signal(sid, f) is the same? then why? |
| extern void sig_catch(int,void (*)(int)); |
| //#define sig_ignore(s) (sig_catch((s), SIG_IGN)) |
| //#define sig_uncatch(s) (sig_catch((s), SIG_DFL)) |
| extern void sig_block(int); |
| extern void sig_unblock(int); |
| /* UNUSED: extern void sig_blocknone(void); */ |
| extern void sig_pause(void); |
| |
| |
| void xsetgid(gid_t gid); |
| void xsetuid(uid_t uid); |
| void xchdir(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); |
| off_t xlseek(int fd, off_t offset, int whence); |
| off_t fdlength(int fd); |
| |
| |
| 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); |
| int setsockopt_reuseaddr(int fd); |
| 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 |
| }; |
| } len_and_sockaddr; |
| enum { |
| 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 allocated suitable lsa |
| * (lsa of correct size and lsa->sa.sa_family (AF_INET/AF_INET6)) */ |
| int xsocket_type(len_and_sockaddr **lsap, int sock_type); |
| 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 */ |
| 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); |
| #if ENABLE_FEATURE_IPV6 |
| /* Same, useful if you want to force family (e.g. IPv6) */ |
| 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); |
| #else |
| /* [we evaluate af: think about "host_and_af2sockaddr(..., af++)"] */ |
| #define host_and_af2sockaddr(host, port, af) ((void)(af), host2sockaddr((host), (port))) |
| #define xhost_and_af2sockaddr(host, port, af) ((void)(af), xhost2sockaddr((host), (port))) |
| #endif |
| /* Assign sin[6]_port member if the socket is of corresponding type, |
| * 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, socklen_t salen); |
| /* This one doesn't append :PORTNUM */ |
| char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa, socklen_t salen); |
| /* This one also doesn't fall back to dotted IP (returns NULL) */ |
| char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa, socklen_t salen); |
| /* inet_[ap]ton on steroids */ |
| char* xmalloc_sockaddr2dotted(const struct sockaddr *sa, socklen_t salen); |
| char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa, socklen_t salen); |
| // "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 *from, const struct sockaddr *to, |
| 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); |
| |
| |
| extern char *xstrdup(const char *s); |
| extern char *xstrndup(const char *s, int n); |
| extern char *safe_strncpy(char *dst, const char *src, size_t size); |
| extern char *xasprintf(const char *format, ...) __attribute__ ((format (printf, 1, 2))); |
| // gcc-4.1.1 still isn't good enough at optimizing it |
| // (+200 bytes compared to macro) |
| //static ATTRIBUTE_ALWAYS_INLINE |
| //int LONE_DASH(const char *s) { return s[0] == '-' && !s[1]; } |
| //static ATTRIBUTE_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 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); |
| extern char *reads(int fd, char *buf, size_t count); |
| extern ssize_t read_close(int fd, void *buf, size_t count); |
| extern ssize_t open_read_close(const char *filename, void *buf, size_t count); |
| extern void *xmalloc_open_read_close(const char *filename, size_t *sizep); |
| |
| extern ssize_t safe_write(int fd, const void *buf, size_t count); |
| 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); |
| extern char *xmalloc_fgets(FILE *file); |
| /* Read up to (and including) TERMINATING_STRING: */ |
| extern char *xmalloc_fgets_str(FILE *file, const char *terminating_string); |
| /* Chops off '\n' from the end, unlike fgets: */ |
| extern char *xmalloc_getline(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 *fopen_or_warn_stdin(const char *filename); |
| |
| /* Convert each alpha char in str to lower-case */ |
| extern 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); |
| void smart_ulltoa5(unsigned long long ul, char buf[5]); |
| //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); |
| |
| struct suffix_mult { |
| const char *suffix; |
| 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); |
| /* what is this? */ |
| /*extern char *bb_getug(char *buffer, char *idname, long id, int bufsize, char prefix);*/ |
| char *bb_getpwuid(char *name, long uid, int bufsize); |
| char *bb_getgrgid(char *group, long gid, int bufsize); |
| /* 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) }; |
| |
| |
| struct bb_applet; |
| int execable_file(const char *name); |
| char *find_execable(const char *filename); |
| int exists_execable(const char *filename); |
| |
| #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)) ? 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); |
| |
| /* 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_pid(int *wstat, int pid); |
| int wait_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) |
| /* Does NOT check that applet is NOFORK, just blindly runs it */ |
| int run_nofork_applet(const struct bb_applet *a, char **argv); |
| /* wait4pid(spawn(argv)) + NOFORK/NOEXEC (if configured) */ |
| int spawn_and_wait(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. 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 */ 0, /* no users so far */ |
| DAEMON_CLOSE_EXTRA_FDS = 4, |
| DAEMON_ONLY_SANITIZE = 8, /* internal use */ |
| }; |
| #if BB_MMU |
| void forkexit_or_rexec(void); |
| # 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 forkexit_or_rexec(char **argv); |
| extern bool re_execed; |
| # 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); |
| |
| |
| // TODO: always error out? |
| enum { BB_GETOPT_ERROR = 0x80000000 }; |
| extern const char *opt_complementary; |
| #if ENABLE_GETOPT_LONG |
| extern const struct option *applet_long_options; |
| #endif |
| extern uint32_t option_mask32; |
| extern uint32_t getopt32(int argc, 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... */ |
| |
| |
| #if ENABLE_FEATURE_PIDFILE |
| int write_pidfile(const char *path); |
| #define remove_pidfile(f) ((void)unlink(f)) |
| #else |
| /* Why? #defining it to 1 gives "warning: statement with no effect"... */ |
| static ATTRIBUTE_ALWAYS_INLINE int write_pidfile(const char *path) { return 1; } |
| #define remove_pidfile(f) ((void)0) |
| #endif |
| |
| enum { |
| LOGMODE_NONE = 0, |
| LOGMODE_STDIO = 1<<0, |
| LOGMODE_SYSLOG = 1<<1, |
| 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 ATTRIBUTE_EXTERNALLY_VISIBLE; |
| 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_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))); |
| extern void bb_vherror_msg(const char *s, va_list p); |
| 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))); |
| /* These are used internally -- you shouldn't need to use them */ |
| extern void bb_verror_msg(const char *s, va_list p, const char *strerr); |
| extern void bb_vperror_msg(const char *s, va_list p); |
| extern void bb_vinfo_msg(const char *s, va_list p); |
| |
| |
| /* applets which are useful from another applets */ |
| int bb_cat(char** argv); |
| int bb_echo(char** argv); |
| int bb_test(int argc, char** argv); |
| #if ENABLE_ROUTE |
| void bb_displayroutes(int noresolve, int netstatfmt); |
| #endif |
| int chown_main(int argc, char **argv); |
| #if ENABLE_GUNZIP |
| int gunzip_main(int argc, char **argv); |
| #endif |
| int bbunpack(char **argv, |
| char* (*make_new_name)(char *filename), |
| USE_DESKTOP(long long) int (*unpacker)(void) |
| ); |
| |
| |
| /* 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 int 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 const struct bb_applet *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_current_applet_and_exit(char **argv) ATTRIBUTE_NORETURN; |
| #endif |
| |
| extern int match_fstype(const struct mntent *mt, const char *fstypes); |
| extern struct mntent *find_mount_point(const char *name, const char *table); |
| 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); |
| extern int set_loop(char **device, 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); |
| int klogctl(int type, char * b, int len); |
| |
| extern int bb_parse_mode(const char* s, mode_t* theMode); |
| |
| char *concat_path_file(const char *path, const char *filename); |
| char *concat_subpath_file(const char *path, const char *filename); |
| 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); |
| |
| 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 const char *change_identity_e2str(const struct passwd *pw); |
| 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); |
| #endif |
| extern void selinux_or_die(void); |
| extern int restricted_shell(const char *shell); |
| extern void setup_environment(const char *shell, int loginshell, int changeenv, const struct passwd *pw); |
| extern int correct_password(const struct passwd *pw); |
| extern char *pw_encrypt(const char *clear, const char *salt); |
| extern int obscure(const char *old, const char *newval, const struct passwd *pwdp); |
| extern int index_in_str_array(const char * const string_array[], const char *key); |
| extern int index_in_substr_array(const char * const string_array[], const char *key); |
| extern void print_login_issue(const char *issue_file, const char *tty); |
| extern void print_login_prompt(void); |
| |
| |
| int get_terminal_width_height(const int fd, int *width, int *height); |
| |
| 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); |
| 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 { |
| DIR *dir; |
| /* Fields are set to 0/NULL if failed to determine (or not requested) */ |
| char *cmd; |
| unsigned long vsz; |
| unsigned long stime, utime; |
| unsigned pid; |
| unsigned ppid; |
| unsigned pgid; |
| unsigned sid; |
| unsigned uid; |
| unsigned gid; |
| /* basename of executable file in call to exec(2), size from */ |
| /* sizeof(task_struct.comm) in /usr/include/linux/sched.h */ |
| char state[4]; |
| 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, |
| PSSCAN_STATE = 1 << 7, |
| PSSCAN_VSZ = 1 << 8, |
| PSSCAN_STIME = 1 << 9, |
| PSSCAN_UTIME = 1 << 10, |
| /* 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_STIME | PSSCAN_UTIME, |
| }; |
| procps_status_t* alloc_procps_scan(int flags); |
| void free_procps_scan(procps_status_t* sp); |
| procps_status_t* procps_scan(procps_status_t* sp, int flags); |
| 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(const unsigned char *s, char *store, const 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); |
| |
| |
| 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, |
| #if ENABLE_SELINUX |
| FILEUTILS_PRESERVE_SECURITY_CONTEXT = 0x80, |
| FILEUTILS_SET_SECURITY_CONTEXT = 0x100 |
| #endif |
| }; |
| |
| #define FILEUTILS_CP_OPTSTR "pdRfils" USE_SELINUX("c") |
| extern const struct bb_applet *current_applet; |
| extern const char *applet_name; |
| extern const char BB_BANNER[]; |
| |
| extern const char bb_msg_full_version[]; |
| 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_nologin_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_securetty_file[]; |
| extern const char bb_path_motd_file[]; |
| extern const char bb_path_wtmp_file[]; |
| extern const char bb_dev_null[]; |
| |
| extern const int const_int_0; |
| extern const int const_int_1; |
| |
| |
| #ifndef BUFSIZ |
| #define BUFSIZ 4096 |
| #endif |
| // TODO: provide hard guarantees on minimum size of bb_common_bufsiz1 |
| extern char bb_common_bufsiz1[BUFSIZ+1]; |
| /* 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 PTR_TO_GLOBALS = xxx */ |
| extern struct globals *const ptr_to_globals; |
| #define PTR_TO_GLOBALS (*(struct globals**)&ptr_to_globals) |
| |
| |
| /* 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_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_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) |
| |
| |
| #ifdef DMALLOC |
| #include <dmalloc.h> |
| #endif |
| |
| #endif /* __LIBBUSYBOX_H__ */ |