diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/renameat.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/renameat.c | 163 |
1 files changed, 2 insertions, 161 deletions
diff --git a/sysdeps/unix/sysv/linux/renameat.c b/sysdeps/unix/sysv/linux/renameat.c index dbc4c75c01..6f2e148fa4 100644 --- a/sysdeps/unix/sysv/linux/renameat.c +++ b/sysdeps/unix/sysv/linux/renameat.c @@ -19,88 +19,10 @@ #include <fcntl.h> #include <stdio.h> #include <string.h> -#include <kernel-features.h> #include <sysdep.h> -#ifndef __ASSUME_ATFCTS -void -attribute_hidden -__atfct_seterrno_2 (int errval, int fd1, const char *buf1, int fd2, - const char *buf2) -{ - if (buf1 != NULL || buf2 != NULL) - { - struct stat64 st; - - if (errval == ENOTDIR) - { - /* This can mean either the file descriptor is invalid or - /proc is not mounted. */ - if (buf1 != NULL) - { - if (__fxstat64 (_STAT_VER, fd1, &st) != 0) - /* errno is already set correctly. */ - return; - - /* If /proc is not mounted there is nothing we can do. */ - if (S_ISDIR (st.st_mode) - && (__xstat64 (_STAT_VER, "/proc/self/fd", &st) != 0 - || !S_ISDIR (st.st_mode))) - { - errval = ENOSYS; - goto out; - } - } - - if (buf2 != NULL) - { - if (__fxstat64 (_STAT_VER, fd2, &st) != 0) - /* errno is already set correctly. */ - return; - - /* If /proc is not mounted there is nothing we can do. */ - if (S_ISDIR (st.st_mode) - && (__xstat64 (_STAT_VER, "/proc/self/fd", &st) != 0 - || !S_ISDIR (st.st_mode))) - errval = ENOSYS; - } - } - else if (errval == ENOENT) - { - /* This could mean the file descriptor is not valid. We - reuse BUF for the stat call. Find the slash after the - file descriptor number. */ - if (buf1 != NULL) - { - *(char *) strchr (buf1 + sizeof "/proc/self/fd", '/') = '\0'; - - int e = __lxstat64 (_STAT_VER, buf1, &st); - if ((e == -1 && errno == ENOENT) - ||(e == 0 && !S_ISLNK (st.st_mode))) - { - errval = EBADF; - goto out; - } - } - - if (buf2 != NULL) - { - *(char *) strchr (buf2 + sizeof "/proc/self/fd", '/') = '\0'; - - int e = __lxstat64 (_STAT_VER, buf2, &st); - if ((e == -1 && errno == ENOENT) - ||(e == 0 && !S_ISLNK (st.st_mode))) - errval = EBADF; - } - } - } - - out: - __set_errno (errval); -} -#endif - +/* Consider moving to syscalls.list. */ /* Rename the file OLD relative to OLDFD to NEW relative to NEWFD. */ int @@ -110,86 +32,5 @@ renameat (oldfd, old, newfd, new) int newfd; const char *new; { - int result; - -#ifdef __NR_renameat -# ifndef __ASSUME_ATFCTS - if (__have_atfcts >= 0) -# endif - { - result = INLINE_SYSCALL (renameat, 4, oldfd, old, newfd, new); -# ifndef __ASSUME_ATFCTS - if (result == -1 && errno == ENOSYS) - __have_atfcts = -1; - else -# endif - return result; - } -#endif - -#ifndef __ASSUME_ATFCTS - static const char procfd[] = "/proc/self/fd/%d/%s"; - char *bufold = NULL; - - if (oldfd != AT_FDCWD && old[0] != '/') - { - size_t filelen = strlen (old); - if (__glibc_unlikely (filelen == 0)) - { - __set_errno (ENOENT); - return -1; - } - - /* 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; - bufold = alloca (buflen); - - __snprintf (bufold, buflen, procfd, oldfd, old); - old = bufold; - } - - char *bufnew = NULL; - - if (newfd != AT_FDCWD && new[0] != '/') - { - size_t filelen = strlen (new); - if (__glibc_unlikely (filelen == 0)) - { - __set_errno (ENOENT); - return -1; - } - - /* 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; - bufnew = alloca (buflen); - - __snprintf (bufnew, buflen, procfd, newfd, new); - new = bufnew; - } - - INTERNAL_SYSCALL_DECL (err); - - result = INTERNAL_SYSCALL (rename, err, 2, old, new); - - if (__glibc_unlikely (INTERNAL_SYSCALL_ERROR_P (result, err))) - { - __atfct_seterrno_2 (INTERNAL_SYSCALL_ERRNO (result, err), newfd, bufnew, - oldfd, bufold); - result = -1; - } - - return result; -#endif + return INLINE_SYSCALL (renameat, 4, oldfd, old, newfd, new); } |