d9d47c3078
In most cases, dirname returns the same argument it was given, so this code
works nice, but there's one special case: when the name contains no
dirname, it returns "." (stored statically in the body of itself), and we
get a segfault in attempt to free() it.
This patch fixes this problem.
77 lines
2.1 KiB
C
77 lines
2.1 KiB
C
#include <sys/types.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <utime.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include "libbb.h"
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#include "unarchive.h"
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extern void data_extract_all(archive_handle_t *archive_handle)
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{
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file_header_t *file_header = archive_handle->file_header;
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int dst_fd;
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int res;
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if (archive_handle->flags & ARCHIVE_CREATE_LEADING_DIRS) {
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char *name = strdup(file_header->name);
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make_directory (dirname(name), 0777, FILEUTILS_RECUR);
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free(name);
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}
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/* Create the file */
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switch(file_header->mode & S_IFMT) {
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case S_IFREG: {
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#ifdef CONFIG_CPIO
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if (file_header->link_name) {
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/* hard link */
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res = link(file_header->link_name, file_header->name);
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if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
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perror_msg("Couldnt create hard link");
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}
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} else
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#endif
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{
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/* Regular file */
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dst_fd = xopen(file_header->name, O_WRONLY | O_CREAT);
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copy_file_chunk_fd(archive_handle->src_fd, dst_fd, file_header->size);
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close(dst_fd);
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}
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break;
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}
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case S_IFDIR:
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res = mkdir(file_header->name, file_header->mode);
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if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
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perror_msg("extract_archive: %s", file_header->name);
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}
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break;
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case S_IFLNK:
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/* Symlink */
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res = symlink(file_header->link_name, file_header->name);
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if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
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perror_msg("Cannot create symlink from %s to '%s'", file_header->name, file_header->link_name);
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}
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break;
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case S_IFSOCK:
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case S_IFBLK:
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case S_IFCHR:
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case S_IFIFO:
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res = mknod(file_header->name, file_header->mode, file_header->device);
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if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
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perror_msg("Cannot create node %s", file_header->name);
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}
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break;
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}
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chmod(file_header->name, file_header->mode);
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chown(file_header->name, file_header->uid, file_header->gid);
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if (archive_handle->flags & ARCHIVE_PRESERVE_DATE) {
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struct utimbuf t;
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t.actime = t.modtime = file_header->mtime;
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utime(file_header->name, &t);
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}
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}
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