/* POSIX-specific extra functions. Copyright (C) 2016-2018 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/>. */ /* 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 <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); void xstat (const char *path, struct stat64 *); void xfstat (int fd, struct stat64 *); 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); /* 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); /* 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); void xmunmap (void *addr, size_t length); __END_DECLS #endif /* SUPPORT_XUNISTD_H */