archival/libunarchive/data_extract_all.c

   1 #include <sys/types.h>
   2 #include <errno.h>
   3 #include <fcntl.h>
   4 #include <stdlib.h>
   5 #include <string.h>
   6 #include <utime.h>
   7 #include <unistd.h>
   8 #include <stdlib.h>
   9 #include "libbb.h"
  10 #include "unarchive.h"
  11
  12 extern void data_extract_all(archive_handle_t *archive_handle)
  13 {
  14         file_header_t *file_header = archive_handle->file_header;
  15         int dst_fd;
  16         int res;
  17
  18         if (archive_handle->flags & ARCHIVE_CREATE_LEADING_DIRS) {
  19                 char *name = strdup(file_header->name);
  20                 make_directory (dirname(name), 0777, FILEUTILS_RECUR);
  21                 free(name);
  22         }
  23
  24         /* Create the file */
  25         switch(file_header->mode & S_IFMT) {
  26                 case S_IFREG: {
  27 #ifdef CONFIG_CPIO
  28                         if (file_header->link_name) {
  29                                 /* hard link */
  30                                 res = link(file_header->link_name, file_header->name);
  31                                 if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
  32                                         perror_msg("Couldnt create hard link");
  33                                 }
  34                         } else
  35 #endif
  36                         {
  37                                 /* Regular file */
  38                                 dst_fd = xopen(file_header->name, O_WRONLY | O_CREAT);
  39                                 copy_file_chunk_fd(archive_handle->src_fd, dst_fd, file_header->size);
  40                                 close(dst_fd);
  41                         }
  42                         break;
  43                 }
  44                 case S_IFDIR:
  45                         res = mkdir(file_header->name, file_header->mode);
  46                         if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
  47                                 perror_msg("extract_archive: %s", file_header->name);
  48                         }
  49                         break;
  50                 case S_IFLNK:
  51                         /* Symlink */
  52                         res = symlink(file_header->link_name, file_header->name);
  53                         if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
  54                                 perror_msg("Cannot create symlink from %s to '%s'", file_header->name, file_header->link_name);
  55                         }
  56                         break;
  57                 case S_IFSOCK:
  58                 case S_IFBLK:
  59                 case S_IFCHR:
  60                 case S_IFIFO:
  61                         res = mknod(file_header->name, file_header->mode, file_header->device);
  62                         if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
  63                                 perror_msg("Cannot create node %s", file_header->name);
  64                         }
  65                         break;
  66         }
  67
  68         chmod(file_header->name, file_header->mode);
  69         chown(file_header->name, file_header->uid, file_header->gid);
  70
  71         if (archive_handle->flags & ARCHIVE_PRESERVE_DATE) {
  72                 struct utimbuf t;
  73                 t.actime = t.modtime = file_header->mtime;
  74                 utime(file_header->name, &t);
  75         }
  76 }