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Fix cp /dev/null filename, and a few in-passing cleanups.

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This commit is contained in:
Rob Landley
2005-11-01 21:55:14 +00:00
parent dbc608b568
commit 2f30932eca
2 changed files with 47 additions and 85 deletions
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105
libbb/copy_file.c
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@@ -4,19 +4,7 @@
*
* Copyright (C) 2001 by Matt Kraai <kraai@alumni.carnegiemellon.edu>
*
* 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
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*
*/
@@ -32,6 +20,13 @@
#include "busybox.h"
/* Compiler version-specific crap that should be in a header file somewhere. */
#if !((__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1))
#define lchown chown
#endif
int copy_file(const char *source, const char *dest, int flags)
{
struct stat source_stat;
@@ -100,7 +95,7 @@ int copy_file(const char *source, const char *dest, int flags)
if ((dp = opendir(source)) == NULL) {
bb_perror_msg("unable to open directory `%s'", source);
status = -1;
goto end;
goto preserve_status;
}
while ((d = readdir(dp)) != NULL) {
@@ -123,7 +118,8 @@ int copy_file(const char *source, const char *dest, int flags)
bb_perror_msg("unable to change permissions of `%s'", dest);
status = -1;
}
} else if (S_ISREG(source_stat.st_mode)) {
} else if (S_ISREG(source_stat.st_mode) || (flags & FILEUTILS_DEREFERENCE))
{
int src_fd;
int dst_fd;
#ifdef CONFIG_FEATURE_PRESERVE_HARDLINKS
@@ -138,6 +134,7 @@ int copy_file(const char *source, const char *dest, int flags)
return 0;
}
add_to_ino_dev_hashtable(&source_stat, dest);
#endif
src_fd = open(source, O_RDONLY);
if (src_fd == -1) {
@@ -193,8 +190,7 @@ int copy_file(const char *source, const char *dest, int flags)
bb_perror_msg("unable to close `%s'", source);
status = -1;
}
}
else if (S_ISBLK(source_stat.st_mode) || S_ISCHR(source_stat.st_mode) ||
} else if (S_ISBLK(source_stat.st_mode) || S_ISCHR(source_stat.st_mode) ||
S_ISSOCK(source_stat.st_mode) || S_ISFIFO(source_stat.st_mode) ||
S_ISLNK(source_stat.st_mode)) {
@@ -208,65 +204,54 @@ int copy_file(const char *source, const char *dest, int flags)
return -1;
}
}
if (S_ISFIFO(source_stat.st_mode)) {
if (mkfifo(dest, source_stat.st_mode) < 0) {
bb_perror_msg("cannot create fifo `%s'", dest);
return -1;
}
} else if (S_ISLNK(source_stat.st_mode)) {
char *lpath;
lpath = xreadlink(source);
if (symlink(lpath, dest) < 0) {
bb_perror_msg("cannot create symlink `%s'", dest);
return -1;
}
free(lpath);
if (flags & FILEUTILS_PRESERVE_STATUS)
if (lchown(dest, source_stat.st_uid, source_stat.st_gid) < 0)
bb_perror_msg("unable to preserve ownership of `%s'", dest);
return 0;
} else {
if (mknod(dest, source_stat.st_mode, source_stat.st_rdev) < 0) {
bb_perror_msg("unable to create `%s'", dest);
return -1;
}
}
} else {
bb_error_msg("internal error: unrecognized file type");
return -1;
}
if (S_ISBLK(source_stat.st_mode) || S_ISCHR(source_stat.st_mode) ||
S_ISSOCK(source_stat.st_mode)) {
if (mknod(dest, source_stat.st_mode, source_stat.st_rdev) < 0) {
bb_perror_msg("unable to create `%s'", dest);
return -1;
}
} else if (S_ISFIFO(source_stat.st_mode)) {
if (mkfifo(dest, source_stat.st_mode) < 0) {
bb_perror_msg("cannot create fifo `%s'", dest);
return -1;
}
} else if (S_ISLNK(source_stat.st_mode)) {
char *lpath;
lpath = xreadlink(source);
if (symlink(lpath, dest) < 0) {
bb_perror_msg("cannot create symlink `%s'", dest);
return -1;
}
free(lpath);
#if (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1)
if (flags & FILEUTILS_PRESERVE_STATUS)
if (lchown(dest, source_stat.st_uid, source_stat.st_gid) < 0)
bb_perror_msg("unable to preserve ownership of `%s'", dest);
#endif
#ifdef CONFIG_FEATURE_PRESERVE_HARDLINKS
add_to_ino_dev_hashtable(&source_stat, dest);
#endif
return 0;
}
#ifdef CONFIG_FEATURE_PRESERVE_HARDLINKS
if (! S_ISDIR(source_stat.st_mode)) {
add_to_ino_dev_hashtable(&source_stat, dest);
}
#endif
end:
preserve_status:
if (flags & FILEUTILS_PRESERVE_STATUS) {
struct utimbuf times;
char *msg="unable to preserve %s of `%s'";
times.actime = source_stat.st_atime;
times.modtime = source_stat.st_mtime;
if (utime(dest, &times) < 0)
bb_perror_msg("unable to preserve times of `%s'", dest);
bb_perror_msg(msg, "times", dest);
if (chown(dest, source_stat.st_uid, source_stat.st_gid) < 0) {
source_stat.st_mode &= ~(S_ISUID | S_ISGID);
bb_perror_msg("unable to preserve ownership of `%s'", dest);
bb_perror_msg(msg, "ownership", dest);
}
if (chmod(dest, source_stat.st_mode) < 0)
bb_perror_msg("unable to preserve permissions of `%s'", dest);
bb_perror_msg(msg, "permissions", dest);
}
return status;