mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-26 23:10:06 +00:00
581c785bf3
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 7061 files FOO. I then removed trailing white space from math/tgmath.h, support/tst-support-open-dev-null-range.c, and sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following obscure pre-commit check failure diagnostics from Savannah. I don't know why I run into these diagnostics whereas others evidently do not. remote: *** 912-#endif remote: *** 913: remote: *** 914- remote: *** error: lines with trailing whitespace found ... remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
/* Copyright (C) 1994-2022 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
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <stddef.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include <fd_to_filename.h>
|
|
#include <sysdep.h>
|
|
#include <sys/syscall.h>
|
|
#include <kernel-features.h>
|
|
|
|
|
|
/* Execute the file FD refers to, overlaying the running program image.
|
|
ARGV and ENVP are passed to the new program, as for `execve'. */
|
|
int
|
|
fexecve (int fd, char *const argv[], char *const envp[])
|
|
{
|
|
if (fd < 0 || argv == NULL || envp == NULL)
|
|
{
|
|
__set_errno (EINVAL);
|
|
return -1;
|
|
}
|
|
|
|
#ifdef __NR_execveat
|
|
/* Avoid implicit array coercion in syscall macros. */
|
|
INLINE_SYSCALL (execveat, 5, fd, "", &argv[0], &envp[0], AT_EMPTY_PATH);
|
|
# ifndef __ASSUME_EXECVEAT
|
|
if (errno != ENOSYS)
|
|
return -1;
|
|
# endif
|
|
#endif
|
|
|
|
#ifndef __ASSUME_EXECVEAT
|
|
/* We use the /proc filesystem to get the information. If it is not
|
|
mounted we fail. We do not need the return value. */
|
|
struct fd_to_filename filename;
|
|
__execve (__fd_to_filename (fd, &filename), argv, envp);
|
|
|
|
int save = errno;
|
|
|
|
/* We come here only if the 'execve' call fails. Determine whether
|
|
/proc is mounted. If not we return ENOSYS. */
|
|
struct __stat64_t64 st;
|
|
if (__stat64_time64 ("/proc/self/fd", &st) != 0 && errno == ENOENT)
|
|
save = ENOSYS;
|
|
|
|
__set_errno (save);
|
|
#endif
|
|
|
|
return -1;
|
|
}
|