uml: host_info tidying
Move the host_info string from util.c to um_arch.c, where it is
actually initialized and used. Also document its lack of locking.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/um/include/os.h b/arch/um/include/os.h
index 5c74da4..22666b4 100644
--- a/arch/um/include/os.h
+++ b/arch/um/include/os.h
@@ -273,7 +273,7 @@
extern void task_protections(unsigned long address);
extern int raw(int fd);
extern void setup_machinename(char *machine_out);
-extern void setup_hostinfo(void);
+extern void setup_hostinfo(char *buf, int len);
extern int setjmp_wrapper(void (*proc)(void *, void *), ...);
/* time.c */
diff --git a/arch/um/include/user_util.h b/arch/um/include/user_util.h
index 99492d5..73ffea1 100644
--- a/arch/um/include/user_util.h
+++ b/arch/um/include/user_util.h
@@ -36,8 +36,6 @@
extern unsigned long start_vm;
extern unsigned long long highmem;
-extern char host_info[];
-
extern unsigned long _stext, _etext, _sdata, _edata, __bss_start, _end;
extern unsigned long _unprotected_end;
extern unsigned long brk_start;
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index 299d75a..613fb08 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -17,6 +17,7 @@
#include "linux/seq_file.h"
#include "linux/delay.h"
#include "linux/module.h"
+#include "linux/utsname.h"
#include "asm/page.h"
#include "asm/pgtable.h"
#include "asm/ptrace.h"
@@ -67,6 +68,9 @@
task));
}
+/* Changed in setup_arch, which is called in early boot */
+static char host_info[(__NEW_UTS_LEN + 1) * 5];
+
static int show_cpuinfo(struct seq_file *m, void *v)
{
int index = 0;
@@ -482,7 +486,7 @@
paging_init();
strlcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
*cmdline_p = command_line;
- setup_hostinfo();
+ setup_hostinfo(host_info, sizeof host_info);
}
void __init check_bugs(void)
diff --git a/arch/um/os-Linux/util.c b/arch/um/os-Linux/util.c
index 56b8a50..125854a 100644
--- a/arch/um/os-Linux/util.c
+++ b/arch/um/os-Linux/util.c
@@ -96,15 +96,13 @@
strcpy(machine_out, host.machine);
}
-char host_info[(_UTSNAME_LENGTH + 1) * 4 + _UTSNAME_NODENAME_LENGTH + 1];
-
-void setup_hostinfo(void)
+void setup_hostinfo(char *buf, int len)
{
struct utsname host;
uname(&host);
- sprintf(host_info, "%s %s %s %s %s", host.sysname, host.nodename,
- host.release, host.version, host.machine);
+ snprintf(buf, len, "%s %s %s %s %s", host.sysname, host.nodename,
+ host.release, host.version, host.machine);
}
int setjmp_wrapper(void (*proc)(void *, void *), ...)