diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/openat.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/openat.c | 92 |
1 files changed, 1 insertions, 91 deletions
diff --git a/sysdeps/unix/sysv/linux/openat.c b/sysdeps/unix/sysv/linux/openat.c index 2cf233b8de..36555b958f 100644 --- a/sysdeps/unix/sysv/linux/openat.c +++ b/sysdeps/unix/sysv/linux/openat.c @@ -22,46 +22,12 @@ #include <stdio.h> #include <string.h> #include <sys/stat.h> -#include <kernel-features.h> #include <sysdep-cancel.h> #include <not-cancel.h> #ifndef OPENAT # define OPENAT openat - -# ifndef __ASSUME_ATFCTS -/* Set errno after a failed call. If BUF is not null, - it is a /proc/self/fd/ path name we just tried to use. */ -void -attribute_hidden -__atfct_seterrno (int errval, int fd, const char *buf) -{ - if (buf != NULL) - { - struct stat64 st; - - if (errval == ENOTDIR || errval == ENOENT) - { - /* This can mean either the file descriptor is invalid or - /proc is not mounted. */ - if (__fxstat64 (_STAT_VER, fd, &st) != 0) - /* errno is already set correctly. */ - return; - - /* If /proc is not mounted there is nothing we can do. */ - if ((errval != ENOTDIR || S_ISDIR (st.st_mode)) - && (__xstat64 (_STAT_VER, "/proc/self/fd", &st) != 0 - || !S_ISDIR (st.st_mode))) - errval = ENOSYS; - } - } - - __set_errno (errval); -} - -int __have_atfcts; -# endif #endif @@ -83,63 +49,7 @@ OPENAT_NOT_CANCEL (fd, file, oflag, mode) oflag |= MORE_OFLAGS; #endif - int res; - -#ifdef __NR_openat -# ifndef __ASSUME_ATFCTS - if (__have_atfcts >= 0) -# endif - { - res = INLINE_SYSCALL (openat, 4, fd, file, oflag, mode); - -# ifndef __ASSUME_ATFCTS - if (res == -1 && errno == ENOSYS) - __have_atfcts = -1; - else -# endif - return res; - } -#endif - -#ifndef __ASSUME_ATFCTS - INTERNAL_SYSCALL_DECL (err); - char *buf = NULL; - - if (fd != AT_FDCWD && file[0] != '/') - { - size_t filelen = strlen (file); - if (__glibc_unlikely (filelen == 0)) - { - __set_errno (ENOENT); - return -1; - } - - static const char procfd[] = "/proc/self/fd/%d/%s"; - /* Buffer for the path name we are going to use. It consists of - - the string /proc/self/fd/ - - the file descriptor number - - the file name provided. - The final NUL is included in the sizeof. A bit of overhead - due to the format elements compensates for possible negative - numbers. */ - size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen; - buf = alloca (buflen); - - /* Note: snprintf cannot be canceled. */ - __snprintf (buf, buflen, procfd, fd, file); - file = buf; - } - - res = INTERNAL_SYSCALL (open, err, 3, file, oflag, mode); - - if (__glibc_unlikely (INTERNAL_SYSCALL_ERROR_P (res, err))) - { - __atfct_seterrno (INTERNAL_SYSCALL_ERRNO (res, err), fd, buf); - res = -1; - } - - return res; -#endif + return INLINE_SYSCALL (openat, 4, fd, file, oflag, mode); } #define UNDERIZE(name) UNDERIZE_1 (name) |