mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-03 20:53:13 +03:00
dde2652bb6
DL_SYSDEP_OSCHECK here. * sysdeps/unix/sysv/linux/init-first.c (init): Not here. * sysdeps/unix/sysv/linux/dl-osinfo.h: Include <fcntl.h>. * sysdeps/generic/libc-tls.c (__libc_setup_tls): Bail if argument TCBSIZE <= TLS_INIT_TCB_SIZE, not just if it's zero. * sysdeps/generic/dl-tls.c (_dl_allocate_tls_init): Check l_tls_offset instead of l_type to decide whether to use TLS_DTV_UNALLOCATED. * include/link.h: Comment typo fix. 2002-12-01 Roland McGrath <roland@frob.com> * sysdeps/mach/hurd/bits/posix_opt.h (_POSIX_FSYNC): Set to 200112L. (_POSIX_SPAWN, _POSIX_MAPPED_FILES, _POSIX_MEMLOCK_RANGE, _POSIX_MEMORY_PROTECTION): Likewise. (_POSIX_POLL, _POSIX_SELECT): Removed.
110 lines
3.7 KiB
C
110 lines
3.7 KiB
C
/* Operating system specific code for generic dynamic loader functions.
|
|
Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <string.h>
|
|
#include <fcntl.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/utsname.h>
|
|
#include "kernel-features.h"
|
|
|
|
#ifndef MIN
|
|
# define MIN(a,b) (((a)<(b))?(a):(b))
|
|
#endif
|
|
|
|
#ifdef SHARED
|
|
/* This is the function used in the dynamic linker to print the fatal error
|
|
message. */
|
|
static inline void
|
|
__attribute__ ((__noreturn__))
|
|
dl_fatal (const char *str)
|
|
{
|
|
_dl_dprintf (2, str);
|
|
_exit (1);
|
|
}
|
|
#endif
|
|
|
|
|
|
#define DL_SYSDEP_OSCHECK(FATAL) \
|
|
do { \
|
|
/* Test whether the kernel is new enough. This test is only \
|
|
performed if the library is not compiled to run on all \
|
|
kernels. */ \
|
|
if (__LINUX_KERNEL_VERSION > 0) \
|
|
{ \
|
|
char bufmem[64]; \
|
|
char *buf = bufmem; \
|
|
unsigned int version; \
|
|
int parts; \
|
|
char *cp; \
|
|
struct utsname uts; \
|
|
\
|
|
/* Try the uname syscall */ \
|
|
if (__uname (&uts)) \
|
|
{ \
|
|
/* This was not successful. Now try reading the /proc \
|
|
filesystem. */ \
|
|
ssize_t reslen; \
|
|
int fd = __open ("/proc/sys/kernel/osrelease", O_RDONLY); \
|
|
if (fd == -1 \
|
|
|| (reslen = __read (fd, bufmem, sizeof (bufmem))) <= 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); \
|
|
buf[MIN (reslen, (ssize_t) sizeof (bufmem) - 1)] = '\0'; \
|
|
} \
|
|
else \
|
|
buf = uts.release; \
|
|
\
|
|
/* Now convert it into a number. The string consists of at most \
|
|
three parts. */ \
|
|
version = 0; \
|
|
parts = 0; \
|
|
cp = buf; \
|
|
while ((*cp >= '0') && (*cp <= '9')) \
|
|
{ \
|
|
unsigned int here = *cp++ - '0'; \
|
|
\
|
|
while ((*cp >= '0') && (*cp <= '9')) \
|
|
{ \
|
|
here *= 10; \
|
|
here += *cp++ - '0'; \
|
|
} \
|
|
\
|
|
++parts; \
|
|
version <<= 8; \
|
|
version |= here; \
|
|
\
|
|
if (*cp++ != '.') \
|
|
/* Another part following? */ \
|
|
break; \
|
|
} \
|
|
\
|
|
if (parts < 3) \
|
|
version <<= 8 * (3 - parts); \
|
|
\
|
|
/* Now we can test with the required version. */ \
|
|
if (version < __LINUX_KERNEL_VERSION) \
|
|
/* Not sufficent. */ \
|
|
FATAL ("FATAL: kernel too old\n"); \
|
|
\
|
|
GL(dl_osversion) = version; \
|
|
} \
|
|
} while (0)
|