glibc/support/xunistd.h

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/* POSIX-specific extra functions.
Copyright (C) 2016-2021 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
Prefer https to http for gnu.org and fsf.org URLs Also, change sources.redhat.com to sourceware.org. This patch was automatically generated by running the following shell script, which uses GNU sed, and which avoids modifying files imported from upstream: sed -ri ' s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g ' \ $(find $(git ls-files) -prune -type f \ ! -name '*.po' \ ! -name 'ChangeLog*' \ ! -path COPYING ! -path COPYING.LIB \ ! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \ ! -path manual/texinfo.tex ! -path scripts/config.guess \ ! -path scripts/config.sub ! -path scripts/install-sh \ ! -path scripts/mkinstalldirs ! -path scripts/move-if-change \ ! -path INSTALL ! -path locale/programs/charmap-kw.h \ ! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \ ! '(' -name configure \ -execdir test -f configure.ac -o -f configure.in ';' ')' \ ! '(' -name preconfigure \ -execdir test -f preconfigure.ac ';' ')' \ -print) and then by running 'make dist-prepare' to regenerate files built from the altered files, and then executing the following to cleanup: chmod a+x sysdeps/unix/sysv/linux/riscv/configure # Omit irrelevant whitespace and comment-only changes, # perhaps from a slightly-different Autoconf version. git checkout -f \ sysdeps/csky/configure \ sysdeps/hppa/configure \ sysdeps/riscv/configure \ sysdeps/unix/sysv/linux/csky/configure # Omit changes that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines git checkout -f \ sysdeps/powerpc/powerpc64/ppc-mcount.S \ sysdeps/unix/sysv/linux/s390/s390-64/syscall.S # Omit change that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
2019-09-07 05:40:42 +00:00
<https://www.gnu.org/licenses/>. */
/* These wrapper functions use POSIX types and therefore cannot be
declared in <support/support.h>. */
#ifndef SUPPORT_XUNISTD_H
#define SUPPORT_XUNISTD_H
#include <sys/cdefs.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
__BEGIN_DECLS
struct stat64;
pid_t xfork (void);
pid_t xwaitpid (pid_t, int *status, int flags);
void xpipe (int[2]);
void xdup2 (int, int);
int xopen (const char *path, int flags, mode_t);
#ifndef __USE_TIME_BITS64
# ifdef __USE_FILE_OFFSET64
void xstat (const char *path, struct stat *);
void xlstat (const char *path, struct stat *);
void xfstat (int fd, struct stat *);
# else
void xstat (const char *path, struct stat64 *);
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void xlstat (const char *path, struct stat64 *);
void xfstat (int fd, struct stat64 *);
# endif
#else
void __REDIRECT (xstat, (const char *path, struct stat *), xstat_time64);
void __REDIRECT (xlstat, (const char *path, struct stat *), xlstat_time64);
void __REDIRECT (xfstat, (int fd, struct stat *), xfstat_time64);
#endif
void xmkdir (const char *path, mode_t);
void xchroot (const char *path);
void xunlink (const char *path);
long xsysconf (int name);
long long xlseek (int fd, long long offset, int whence);
void xftruncate (int fd, long long length);
void xsymlink (const char *target, const char *linkpath);
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void xchdir (const char *path);
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void xfchmod (int fd, mode_t mode);
void xchmod (const char *pathname, mode_t mode);
/* Equivalent of "mkdir -p". */
void xmkdirp (const char *, mode_t);
/* Read the link at PATH. The caller should free the returned string
with free. */
char *xreadlink (const char *path);
/* Close the file descriptor. Ignore EINTR errors, but terminate the
process on other errors. */
void xclose (int);
/* Write the buffer. Retry on short writes. */
void xwrite (int, const void *, size_t);
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/* Invoke mmap with a zero file offset. */
void *xmmap (void *addr, size_t length, int prot, int flags, int fd);
void xmprotect (void *addr, size_t length, int prot);
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void xmunmap (void *addr, size_t length);
ssize_t xcopy_file_range(int fd_in, loff_t *off_in, int fd_out,
loff_t *off_out, size_t len, unsigned int flags);
__END_DECLS
#endif /* SUPPORT_XUNISTD_H */