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Diffstat (limited to 'sysdeps/unix/sysv/linux/dl-sysdep.c')
-rw-r--r--sysdeps/unix/sysv/linux/dl-sysdep.c132
1 files changed, 0 insertions, 132 deletions
diff --git a/sysdeps/unix/sysv/linux/dl-sysdep.c b/sysdeps/unix/sysv/linux/dl-sysdep.c
deleted file mode 100644
index 3082ce207e..0000000000
--- a/sysdeps/unix/sysv/linux/dl-sysdep.c
+++ /dev/null
@@ -1,132 +0,0 @@
-/* Dynamic linker system dependencies for Linux.
- Copyright (C) 1995-2017 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, see
- <http://www.gnu.org/licenses/>. */
-
-/* Linux needs some special initialization, but otherwise uses
- the generic dynamic linker system interface code. */
-
-#include <string.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <sys/param.h>
-#include <sys/utsname.h>
-#include <ldsodefs.h>
-
-#ifdef SHARED
-# define DL_SYSDEP_INIT frob_brk ()
-
-static inline void
-frob_brk (void)
-{
- __brk (0); /* Initialize the break. */
-}
-
-# include <elf/dl-sysdep.c>
-#endif
-
-
-int
-attribute_hidden
-_dl_discover_osversion (void)
-{
-#if defined NEED_DL_SYSINFO_DSO && defined SHARED
- if (GLRO(dl_sysinfo_map) != NULL)
- {
- /* If the kernel-supplied DSO contains a note indicating the kernel's
- version, we don't need to call uname or parse any strings. */
-
- static const struct
- {
- ElfW(Nhdr) hdr;
- char vendor[8];
- } expected_note = { { sizeof "Linux", sizeof (ElfW(Word)), 0 }, "Linux" };
- const ElfW(Phdr) *const phdr = GLRO(dl_sysinfo_map)->l_phdr;
- const ElfW(Word) phnum = GLRO(dl_sysinfo_map)->l_phnum;
- for (uint_fast16_t i = 0; i < phnum; ++i)
- if (phdr[i].p_type == PT_NOTE)
- {
- const ElfW(Addr) start = (phdr[i].p_vaddr
- + GLRO(dl_sysinfo_map)->l_addr);
- const ElfW(Nhdr) *note = (const void *) start;
- while ((ElfW(Addr)) (note + 1) - start < phdr[i].p_memsz)
- {
- if (!memcmp (note, &expected_note, sizeof expected_note))
- return *(const ElfW(Word) *) ((const void *) note
- + sizeof expected_note);
-#define ROUND(len) (((len) + sizeof note->n_type - 1) & -sizeof note->n_type)
- note = ((const void *) (note + 1)
- + ROUND (note->n_namesz) + ROUND (note->n_descsz));
-#undef ROUND
- }
- }
- }
-#endif
-
- char bufmem[64];
- char *buf = bufmem;
- unsigned int version;
- int parts;
- char *cp;
- struct utsname uts;
-
- /* Try the uname system call. */
- if (__uname (&uts))
- {
- /* This was not successful. Now try reading the /proc filesystem. */
- int fd = __open ("/proc/sys/kernel/osrelease", O_RDONLY);
- if (fd < 0)
- return -1;
- ssize_t reslen = __read (fd, bufmem, sizeof (bufmem));
- __close (fd);
- if (reslen <= 0)
- /* This also didn't work. We give up since we cannot
- make sure the library can actually work. */
- return -1;
- 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++ != '.' || parts == 3)
- /* Another part following? */
- break;
- }
-
- if (parts < 3)
- version <<= 8 * (3 - parts);
-
- return version;
-}