248 lines
7.6 KiB
Diff
248 lines
7.6 KiB
Diff
--- cpio-2.6/src/copyin.c.chmodRaceC 2005-07-01 14:23:04.000000000 +0200
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+++ cpio-2.6/src/copyin.c 2005-07-01 14:46:34.000000000 +0200
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@@ -184,11 +184,12 @@
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static int
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try_existing_file(struct new_cpio_header* file_hdr, int in_file_des,
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- int *existing_dir)
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+ int *existing_dir, mode_t *existing_mode)
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{
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struct stat file_stat;
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*existing_dir = false;
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+ *existing_mode = 0;
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if (lstat (file_hdr->c_name, &file_stat) == 0)
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{
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if (S_ISDIR (file_stat.st_mode)
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@@ -198,6 +199,7 @@
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we are trying to create, don't complain about
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it. */
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*existing_dir = true;
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+ *existing_mode = file_stat.st_mode;
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return 0;
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}
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else if (!unconditional_flag
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@@ -389,19 +391,20 @@
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continue;
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}
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- if (close (out_file_des) < 0)
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- error (0, errno, "%s", d->header.c_name);
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-
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/* File is now copied; set attributes. */
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if (!no_chown_flag)
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- if ((chown (d->header.c_name,
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+ if ((fchown (out_file_des,
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set_owner_flag ? set_owner : d->header.c_uid,
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set_group_flag ? set_group : d->header.c_gid) < 0)
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&& errno != EPERM)
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error (0, errno, "%s", d->header.c_name);
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/* chown may have turned off some permissions we wanted. */
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- if (chmod (d->header.c_name, (int) d->header.c_mode) < 0)
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+ if (fchmod (out_file_des, (int) d->header.c_mode) < 0)
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error (0, errno, "%s", d->header.c_name);
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+
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+ if (close (out_file_des) < 0)
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+ error (0, errno, "%s", d->header.c_name);
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+
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if (retain_time_flag)
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{
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times.actime = times.modtime = d->header.c_mtime;
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@@ -557,6 +560,19 @@
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write (out_file_des, "", 1);
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delayed_seek_count = 0;
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}
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+
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+ /* File is now copied; set attributes. */
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+ if (!no_chown_flag)
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+ if ((fchown (out_file_des,
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+ set_owner_flag ? set_owner : file_hdr->c_uid,
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+ set_group_flag ? set_group : file_hdr->c_gid) < 0)
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+ && errno != EPERM)
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+ error (0, errno, "%s", file_hdr->c_name);
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+
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+ /* chown may have turned off some permissions we wanted. */
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+ if (fchmod (out_file_des, (int) file_hdr->c_mode) < 0)
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+ error (0, errno, "%s", file_hdr->c_name);
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+
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if (close (out_file_des) < 0)
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error (0, errno, "%s", file_hdr->c_name);
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@@ -567,18 +583,6 @@
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file_hdr->c_name, crc, file_hdr->c_chksum);
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}
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- /* File is now copied; set attributes. */
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- if (!no_chown_flag)
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- if ((chown (file_hdr->c_name,
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- set_owner_flag ? set_owner : file_hdr->c_uid,
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- set_group_flag ? set_group : file_hdr->c_gid) < 0)
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- && errno != EPERM)
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- error (0, errno, "%s", file_hdr->c_name);
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-
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- /* chown may have turned off some permissions we wanted. */
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- if (chmod (file_hdr->c_name, (int) file_hdr->c_mode) < 0)
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- error (0, errno, "%s", file_hdr->c_name);
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-
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if (retain_time_flag)
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{
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struct utimbuf times; /* For setting file times. */
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@@ -589,7 +593,7 @@
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if (utime (file_hdr->c_name, ×) < 0)
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error (0, errno, "%s", file_hdr->c_name);
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}
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-
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+
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tape_skip_padding (in_file_des, file_hdr->c_filesize);
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if (file_hdr->c_nlink > 1
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&& (archive_format == arf_newascii || archive_format == arf_crcascii) )
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@@ -603,7 +607,7 @@
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}
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static void
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-copyin_directory(struct new_cpio_header* file_hdr, int existing_dir)
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+copyin_directory(struct new_cpio_header* file_hdr, int existing_dir, mode_t existing_mode)
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{
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int res; /* Result of various function calls. */
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#ifdef HPUX_CDF
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@@ -646,14 +650,23 @@
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cdf_flag = 1;
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}
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#endif
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- res = mkdir (file_hdr->c_name, file_hdr->c_mode);
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+ res = mkdir (file_hdr->c_name, file_hdr->c_mode & ~077);
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}
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- else
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- res = 0;
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+ else
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+ {
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+ if (!no_chown_flag && (existing_mode & 077) != 0
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+ && chmod (file_hdr->c_name, existing_mode & 07700) < 0)
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+ {
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+ error (0, errno, "%s: chmod", file_hdr->c_name);
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+ return;
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+ }
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+ res = 0;
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+ }
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+
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if (res < 0 && create_dir_flag)
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{
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create_all_directories (file_hdr->c_name);
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- res = mkdir (file_hdr->c_name, file_hdr->c_mode);
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+ res = mkdir (file_hdr->c_name, file_hdr->c_mode & ~077);
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}
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if (res < 0)
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{
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@@ -742,12 +755,12 @@
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return;
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}
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- res = mknod (file_hdr->c_name, file_hdr->c_mode,
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+ res = mknod (file_hdr->c_name, file_hdr->c_mode & ~077,
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makedev (file_hdr->c_rdev_maj, file_hdr->c_rdev_min));
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if (res < 0 && create_dir_flag)
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{
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create_all_directories (file_hdr->c_name);
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- res = mknod (file_hdr->c_name, file_hdr->c_mode,
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+ res = mknod (file_hdr->c_name, file_hdr->c_mode & ~077,
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makedev (file_hdr->c_rdev_maj, file_hdr->c_rdev_min));
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}
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if (res < 0)
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@@ -826,9 +839,10 @@
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copyin_file (struct new_cpio_header* file_hdr, int in_file_des)
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{
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int existing_dir;
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+ mode_t existing_mode;
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if (!to_stdout_option
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- && try_existing_file (file_hdr, in_file_des, &existing_dir) < 0)
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+ && try_existing_file (file_hdr, in_file_des, &existing_dir, &existing_mode) < 0)
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return;
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/* Do the real copy or link. */
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@@ -839,7 +853,7 @@
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break;
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case CP_IFDIR:
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- copyin_directory(file_hdr, existing_dir);
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+ copyin_directory(file_hdr, existing_dir, existing_mode);
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break;
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case CP_IFCHR:
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--- cpio-2.6/src/copypass.c.chmodRaceC 2004-09-06 14:09:04.000000000 +0200
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+++ cpio-2.6/src/copypass.c 2005-07-01 14:50:46.000000000 +0200
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@@ -181,19 +181,25 @@
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}
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if (close (in_file_des) < 0)
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error (0, errno, "%s", input_name.ds_string);
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- if (close (out_file_des) < 0)
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- error (0, errno, "%s", output_name.ds_string);
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-
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+ /*
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+ * Avoid race condition.
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+ * Set chown and chmod before closing the file desc.
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+ * pvrabec@redhat.com
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+ */
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/* Set the attributes of the new file. */
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if (!no_chown_flag)
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- if ((chown (output_name.ds_string,
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+ if ((fchown (out_file_des,
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set_owner_flag ? set_owner : in_file_stat.st_uid,
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set_group_flag ? set_group : in_file_stat.st_gid) < 0)
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&& errno != EPERM)
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error (0, errno, "%s", output_name.ds_string);
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/* chown may have turned off some permissions we wanted. */
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- if (chmod (output_name.ds_string, in_file_stat.st_mode) < 0)
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+ if (fchmod (out_file_des, in_file_stat.st_mode) < 0)
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error (0, errno, "%s", output_name.ds_string);
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+
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+ if (close (out_file_des) < 0)
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+ error (0, errno, "%s", output_name.ds_string);
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+
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if (reset_time_flag)
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{
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times.actime = in_file_stat.st_atime;
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@@ -240,15 +246,24 @@
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cdf_flag = 1;
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}
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#endif
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- res = mkdir (output_name.ds_string, in_file_stat.st_mode);
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+ res = mkdir (output_name.ds_string, in_file_stat.st_mode & ~077);
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}
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else
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- res = 0;
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+ {
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+ if (!no_chown_flag && (out_file_stat.st_mode & 077) != 0
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+ && chmod (output_name.ds_string, out_file_stat.st_mode & 07700) < 0)
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+ {
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+ error (0, errno, "%s: chmod", output_name.ds_string);
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+ continue;
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+ }
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+ res = 0;
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+ }
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+
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if (res < 0 && create_dir_flag)
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{
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create_all_directories (output_name.ds_string);
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- res = mkdir (output_name.ds_string, in_file_stat.st_mode);
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+ res = mkdir (output_name.ds_string, in_file_stat.st_mode & ~077);
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}
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if (res < 0)
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{
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@@ -311,12 +326,12 @@
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if (link_res < 0)
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{
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- res = mknod (output_name.ds_string, in_file_stat.st_mode,
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+ res = mknod (output_name.ds_string, in_file_stat.st_mode & ~077,
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in_file_stat.st_rdev);
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if (res < 0 && create_dir_flag)
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{
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create_all_directories (output_name.ds_string);
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- res = mknod (output_name.ds_string, in_file_stat.st_mode,
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+ res = mknod (output_name.ds_string, in_file_stat.st_mode & ~077,
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in_file_stat.st_rdev);
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}
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if (res < 0)
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