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(DL_SYSDEP_OSCHECK): Change to not use sysctl(). Too many architectures have problems with it.

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This commit is contained in:
Ulrich Drepper 2000-09-14 20:13:01 +00:00
parent 1d3f0563c9
commit 39cfe8dd14
1 changed files with 19 additions and 28 deletions
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47
sysdeps/unix/sysv/linux/dl-osinfo.h
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@ -51,39 +51,30 @@ dl_fatal (const char *str)
kernels. */ \ kernels. */ \
if (__LINUX_KERNEL_VERSION > 0) \ if (__LINUX_KERNEL_VERSION > 0) \
{ \ { \
static const int sysctl_args[] = { CTL_KERN, KERN_OSRELEASE }; \ char bufmem[64]; \
char buf[64]; \ char *buf = bufmem; \
size_t reslen = sizeof (buf); \
unsigned int version; \ unsigned int version; \
int parts; \ int parts; \
char *cp; \ char *cp; \
struct utsname uts; \
\ \
/* Try reading the number using `sysctl' first. */ \ /* Try the uname syscall */ \
if (__sysctl ((int *) sysctl_args, \ if (__uname (&uts)) \
sizeof (sysctl_args) / sizeof (sysctl_args[0]), \ { \
buf, &reslen, NULL, 0) < 0) \ /* This was not successful. Now try reading the /proc \
{ \ filesystem. */ \
/* This didn't work. Next try the uname syscall */ \ ssize_t reslen; \
struct utsname uts; \ int fd = __open ("/proc/sys/kernel/osrelease", O_RDONLY); \
if (__uname (&uts)) \ if (fd == -1 \
{ \ || (reslen = __read (fd, bufmem, sizeof (bufmem))) <= 0) \
/* This was not successful. Now try reading the /proc \ /* This also didn't work. We give up since we cannot \
filesystem. */ \ make sure the library can actually work. */ \
int fd = __open ("/proc/sys/kernel/osrelease", O_RDONLY); \ FATAL ("FATAL: cannot determine library version\n"); \
if (fd == -1 \ __close (fd); \
|| (reslen = __read (fd, buf, sizeof (buf))) <= 0) \ buf[MIN (reslen, sizeof (bufmem) - 1)] = '\0'; \
/* This also didn't work. We give up since we cannot \
make sure the library can actually work. */ \
FATAL ("FATAL: cannot determine library version\n"); \
__close (fd); \
} \
else \
{ \
strncpy (buf, uts.release, sizeof (buf)); \
reslen = strlen (uts.release); \
} \
} \ } \
buf[MIN (reslen, sizeof (buf) - 1)] = '\0'; \ else \
buf = uts.release; \
\ \
/* Now convert it into a number. The string consists of at most \ /* Now convert it into a number. The string consists of at most \
three parts. */ \ three parts. */ \