diff options
Diffstat (limited to 'contrib/binutils/binutils/rename.c')
| -rw-r--r-- | contrib/binutils/binutils/rename.c | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/contrib/binutils/binutils/rename.c b/contrib/binutils/binutils/rename.c deleted file mode 100644 index 398152e05f10..000000000000 --- a/contrib/binutils/binutils/rename.c +++ /dev/null @@ -1,217 +0,0 @@ -/* rename.c -- rename a file, preserving symlinks. - Copyright 1999, 2002, 2003 Free Software Foundation, Inc. - - This file is part of GNU Binutils. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program 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 General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA - 02111-1307, USA. */ - -#include "bfd.h" -#include "bucomm.h" - -#include <sys/stat.h> - -#ifdef HAVE_GOOD_UTIME_H -#include <utime.h> -#else /* ! HAVE_GOOD_UTIME_H */ -#ifdef HAVE_UTIMES -#include <sys/time.h> -#endif /* HAVE_UTIMES */ -#endif /* ! HAVE_GOOD_UTIME_H */ - -/* We need to open the file in binary modes on system where that makes - a difference. */ -#ifndef O_BINARY -#define O_BINARY 0 -#endif - -static int simple_copy (const char *, const char *); - -/* The number of bytes to copy at once. */ -#define COPY_BUF 8192 - -/* Copy file FROM to file TO, performing no translations. - Return 0 if ok, -1 if error. */ - -static int -simple_copy (const char *from, const char *to) -{ - int fromfd, tofd, nread; - int saved; - char buf[COPY_BUF]; - - fromfd = open (from, O_RDONLY | O_BINARY); - if (fromfd < 0) - return -1; -#ifdef O_CREAT - tofd = open (to, O_CREAT | O_WRONLY | O_TRUNC | O_BINARY, 0777); -#else - tofd = creat (to, 0777); -#endif - if (tofd < 0) - { - saved = errno; - close (fromfd); - errno = saved; - return -1; - } - while ((nread = read (fromfd, buf, sizeof buf)) > 0) - { - if (write (tofd, buf, nread) != nread) - { - saved = errno; - close (fromfd); - close (tofd); - errno = saved; - return -1; - } - } - saved = errno; - close (fromfd); - close (tofd); - if (nread < 0) - { - errno = saved; - return -1; - } - return 0; -} - -/* Set the times of the file DESTINATION to be the same as those in - STATBUF. */ - -void -set_times (const char *destination, const struct stat *statbuf) -{ - int result; - - { -#ifdef HAVE_GOOD_UTIME_H - struct utimbuf tb; - - tb.actime = statbuf->st_atime; - tb.modtime = statbuf->st_mtime; - result = utime (destination, &tb); -#else /* ! HAVE_GOOD_UTIME_H */ -#ifndef HAVE_UTIMES - long tb[2]; - - tb[0] = statbuf->st_atime; - tb[1] = statbuf->st_mtime; - result = utime (destination, tb); -#else /* HAVE_UTIMES */ - struct timeval tv[2]; - - tv[0].tv_sec = statbuf->st_atime; - tv[0].tv_usec = 0; - tv[1].tv_sec = statbuf->st_mtime; - tv[1].tv_usec = 0; - result = utimes (destination, tv); -#endif /* HAVE_UTIMES */ -#endif /* ! HAVE_GOOD_UTIME_H */ - } - - if (result != 0) - non_fatal (_("%s: cannot set time: %s"), destination, strerror (errno)); -} - -#ifndef S_ISLNK -#ifdef S_IFLNK -#define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) -#else -#define S_ISLNK(m) 0 -#define lstat stat -#endif -#endif - -/* Rename FROM to TO, copying if TO is a link. - Return 0 if ok, -1 if error. */ - -int -smart_rename (const char *from, const char *to, int preserve_dates) -{ - bfd_boolean exists; - struct stat s; - int ret = 0; - - exists = lstat (to, &s) == 0; - -#if defined (_WIN32) && !defined (__CYGWIN32__) - /* Win32, unlike unix, will not erase `to' in `rename(from, to)' but - fail instead. Also, chown is not present. */ - - if (exists) - remove (to); - - ret = rename (from, to); - if (ret != 0) - { - /* We have to clean up here. */ - non_fatal (_("unable to rename '%s' reason: %s"), to, strerror (errno)); - unlink (from); - } -#else - /* Use rename only if TO is not a symbolic link and has - only one hard link, and we have permission to write to it. */ - if (! exists - || (!S_ISLNK (s.st_mode) - && S_ISREG (s.st_mode) - && (s.st_mode & S_IWUSR) - && s.st_nlink == 1) - ) - { - ret = rename (from, to); - if (ret == 0) - { - if (exists) - { - /* Try to preserve the permission bits and ownership of - TO. First get the mode right except for the setuid - bit. Then change the ownership. Then fix the setuid - bit. We do the chmod before the chown because if the - chown succeeds, and we are a normal user, we won't be - able to do the chmod afterward. We don't bother to - fix the setuid bit first because that might introduce - a fleeting security problem, and because the chown - will clear the setuid bit anyhow. We only fix the - setuid bit if the chown succeeds, because we don't - want to introduce an unexpected setuid file owned by - the user running objcopy. */ - chmod (to, s.st_mode & 0777); - if (chown (to, s.st_uid, s.st_gid) >= 0) - chmod (to, s.st_mode & 07777); - } - } - else - { - /* We have to clean up here. */ - non_fatal (_("unable to rename '%s' reason: %s"), to, strerror (errno)); - unlink (from); - } - } - else - { - ret = simple_copy (from, to); - if (ret != 0) - non_fatal (_("unable to copy file '%s' reason: %s"), to, strerror (errno)); - - if (preserve_dates) - set_times (to, &s); - unlink (from); - } -#endif /* _WIN32 && !__CYGWIN32__ */ - - return ret; -} |