[OpenWrt-Devel] [PATCH v2] tools/squashfs: add argument -fixed-time to set all timestamps
Alexander Couzens
lynxis at fe80.eu
Sun Dec 6 04:33:11 EST 2015
-fixed-time <timestamp> set mkfs-timestamp and file-mtime to this timestamp.
Reproducible builds requires the removal of all timestamp or setting all to a specific one.
Signed-off-by: Alexander Couzens <lynxis at fe80.eu>
---
Changelog:
v2:
- use global instead of argument passing
- remove some patch hunks which aren't necessary
.../patches/120-add-fixed-timestamp-support.patch | 81 +++++++++++++++++++++
.../patches/200-add-fixed-timestamp-option.patch | 84 ++++++++++++++++++++++
2 files changed, 165 insertions(+)
create mode 100644 tools/squashfs/patches/120-add-fixed-timestamp-support.patch
create mode 100644 tools/squashfs4/patches/200-add-fixed-timestamp-option.patch
diff --git a/tools/squashfs/patches/120-add-fixed-timestamp-support.patch b/tools/squashfs/patches/120-add-fixed-timestamp-support.patch
new file mode 100644
index 0000000..98dabee
--- /dev/null
+++ b/tools/squashfs/patches/120-add-fixed-timestamp-support.patch
@@ -0,0 +1,81 @@
+Index: squashfs3.0/squashfs-tools/mksquashfs.c
+===================================================================
+--- squashfs3.0.orig/squashfs-tools/mksquashfs.c
++++ squashfs3.0/squashfs-tools/mksquashfs.c
+@@ -117,6 +117,9 @@ unsigned int inode_bytes = 0, inode_size
+ char *data_cache = NULL;
+ unsigned int cache_bytes = 0, cache_size = 0, inode_count = 0;
+
++/* override all timestamps */
++time_t fixed_time = -1;
++
+ /* in memory directory data */
+ #define I_COUNT_SIZE 128
+ #define DIR_ENTRIES 32
+@@ -1554,6 +1557,11 @@ void dir_scan(squashfs_inode *inode, cha
+ perror(buffer);
+ return;
+ }
++
++ /* override timestamp of lstat if fixed_time is given */
++ if(fixed_time != -1)
++ inode_info->buf.st_mtime= fixed_time;
++
+ if(sorted)
+ sort_files_and_write(dir_info);
+ dir_scan2(inode, dir_info);
+@@ -1582,6 +1590,10 @@ struct dir_info *dir_scan1(char *pathnam
+ perror(buffer);
+ continue;
+ }
++
++ if(fixed_time != -1)
++ buf.st_mtime = fixed_time;
++
+ if(excluded(filename, &buf))
+ continue;
+
+@@ -1621,6 +1633,9 @@ int dir_scan2(squashfs_inode *inode, str
+ char *dir_name = dir_ent->name;
+ unsigned int inode_number = ((buf->st_mode & S_IFMT) == S_IFDIR) ? dir_ent->inode->inode_number : dir_ent->inode->inode_number + dir_inode_no;
+
++ if(fixed_time != -1)
++ buf->st_mtime = fixed_time;
++
+ if(dir_ent->inode->inode == SQUASHFS_INVALID_BLK) {
+ switch(buf->st_mode & S_IFMT) {
+ case S_IFREG:
+@@ -1898,6 +1913,16 @@ int main(int argc, char *argv[])
+ exit(1);
+ }
+ }
++ } else if(strcmp(argv[i], "-fixed-time") == 0) {
++ if(++i == argc) {
++ ERROR("%s: -fixed-time missing a timestamp\n", argv[0]);
++ exit(1);
++ }
++ fixed_time = strtoll(argv[i], &b, 10);
++ if(*b != '\0') {
++ ERROR("%s: -fixed-time has an invalid number\n", argv[0]);
++ exit(1);
++ }
+ } else if(strcmp(argv[i], "-noI") == 0 ||
+ strcmp(argv[i], "-noInodeCompression") == 0)
+ noI = TRUE;
+@@ -1967,6 +1992,7 @@ printOptions:
+ ERROR("-all-root\t\tmake all files owned by root\n");
+ ERROR("-force-uid uid\t\tset all file uids to uid\n");
+ ERROR("-force-gid gid\t\tset all file gids to gid\n");
++ ERROR("-fixed-time timestamp\tset all timestamps to timestamp\n");
+ ERROR("-le\t\t\tcreate a little endian filesystem\n");
+ ERROR("-be\t\t\tcreate a big endian filesystem\n");
+ ERROR("-nopad\t\t\tdo not pad filesystem to a multiple of 4K\n");
+@@ -2190,7 +2216,7 @@ printOptions:
+ sBlk.block_size = block_size;
+ sBlk.block_log = block_log;
+ sBlk.flags = SQUASHFS_MKFLAGS(noI, noD, check_data, noF, no_fragments, always_use_fragments, duplicate_checking);
+- sBlk.mkfs_time = time(NULL);
++ sBlk.mkfs_time = fixed_time != -1 ? fixed_time : time(NULL);
+
+ restore_filesystem:
+ write_fragment();
diff --git a/tools/squashfs4/patches/200-add-fixed-timestamp-option.patch b/tools/squashfs4/patches/200-add-fixed-timestamp-option.patch
new file mode 100644
index 0000000..7ac1765
--- /dev/null
+++ b/tools/squashfs4/patches/200-add-fixed-timestamp-option.patch
@@ -0,0 +1,84 @@
+Index: squashfs4.2/squashfs-tools/mksquashfs.c
+===================================================================
+--- squashfs4.2.orig/squashfs-tools/mksquashfs.c
++++ squashfs4.2/squashfs-tools/mksquashfs.c
+@@ -175,6 +175,9 @@ unsigned int cache_bytes = 0, cache_size
+ /* inode lookup table */
+ squashfs_inode *inode_lookup_table = NULL;
+
++/* override all timestamps */
++time_t fixed_time = -1;
++
+ /* in memory directory data */
+ #define I_COUNT_SIZE 128
+ #define DIR_ENTRIES 32
+@@ -2452,6 +2455,8 @@ again:
+ restat:
+ fstat(file, &buf2);
+ close(file);
++ if (fixed_time != -1)
++ buf2.st_mtime = fixed_time;
+ if(read_size != buf2.st_size) {
+ memcpy(buf, &buf2, sizeof(struct stat));
+ file_buffer->error = 2;
+@@ -3612,7 +3617,7 @@ void dir_scan(squashfs_inode *inode, cha
+ buf.st_mode = S_IRWXU | S_IRWXG | S_IRWXO | S_IFDIR;
+ buf.st_uid = getuid();
+ buf.st_gid = getgid();
+- buf.st_mtime = time(NULL);
++ buf.st_mtime = fixed_time != -1 ? fixed_time : time(NULL);
+ buf.st_dev = 0;
+ buf.st_ino = 0;
+ dir_ent->inode = lookup_inode(&buf);
+@@ -3623,6 +3628,8 @@ void dir_scan(squashfs_inode *inode, cha
+ pathname, strerror(errno));
+ return;
+ }
++ if(fixed_time != -1)
++ buf.st_mtime = fixed_time;
+ dir_ent->inode = lookup_inode(&buf);
+ }
+
+@@ -3677,6 +3684,8 @@ struct dir_info *dir_scan1(char *pathnam
+ filename, strerror(errno));
+ continue;
+ }
++ if(fixed_time != -1)
++ buf.st_mtime = fixed_time;
+
+ if((buf.st_mode & S_IFMT) != S_IFREG &&
+ (buf.st_mode & S_IFMT) != S_IFDIR &&
+@@ -3795,7 +3804,7 @@ struct dir_info *dir_scan2(struct dir_in
+ buf.st_gid = pseudo_ent->dev->gid;
+ buf.st_rdev = makedev(pseudo_ent->dev->major,
+ pseudo_ent->dev->minor);
+- buf.st_mtime = time(NULL);
++ buf.st_mtime = fixed_time != -1 ? fixed_time : time(NULL);
+ buf.st_ino = pseudo_ino ++;
+
+ if(pseudo_ent->dev->type == 'f') {
+@@ -4674,6 +4683,15 @@ int main(int argc, char *argv[])
+ progress = FALSE;
+ else if(strcmp(argv[i], "-no-exports") == 0)
+ exportable = FALSE;
++ else if(strcmp(argv[i], "-fixed-time") == 0) {
++ if((++i == argc) || (fixed_time =
++ strtoll(argv[i], &b, 10), *b != '\0')) {
++ ERROR("%s: -fixed-time missing or invalid "
++ "timestamp\n", argv[0]);
++
++ exit(1);
++ }
++ }
+ else if(strcmp(argv[i], "-processors") == 0) {
+ if((++i == argc) || (processors =
+ strtol(argv[i], &b, 10), *b != '\0')) {
+@@ -5314,7 +5332,7 @@ printOptions:
+ sBlk.flags = SQUASHFS_MKFLAGS(noI, noD, noF, noX, no_fragments,
+ always_use_fragments, duplicate_checking, exportable,
+ no_xattrs, comp_opts);
+- sBlk.mkfs_time = time(NULL);
++ sBlk.mkfs_time = fixed_time != -1 ? fixed_time : time(NULL);
+
+ restore_filesystem:
+ if(progress && estimated_uncompressed) {
--
2.6.3
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