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Without these patches, the output of mksquashfs is not reproducible. The patches are taken from https://github.com/squashfskit/squashfskit, a fork of squashfs-tools, licensed under the GPL2 or later like squashfs-tools itself.
83 lines
2.8 KiB
Diff
83 lines
2.8 KiB
Diff
From 32a07d4156a281084c90a4b78affc8b0b32a26fc Mon Sep 17 00:00:00 2001
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From: intrigeri <intrigeri@boum.org>
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Date: Mon, 21 Nov 2016 11:41:28 +0000
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Subject: [PATCH] If SOURCE_DATE_EPOCH is set, also clamp content timestamps
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with that value.
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Based on a patch by Alexander Couzens <lynxis@fe...> posted on
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https://sourceforge.net/p/squashfs/mailman/message/34673610/
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---
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squashfs-tools/mksquashfs.c | 15 ++++++++++++---
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1 file changed, 12 insertions(+), 3 deletions(-)
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diff --git a/squashfs-tools/mksquashfs.c b/squashfs-tools/mksquashfs.c
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index b49e956..9f020bf 100644
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--- a/squashfs-tools/mksquashfs.c
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+++ b/squashfs-tools/mksquashfs.c
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@@ -137,6 +137,9 @@ unsigned int cache_bytes = 0, cache_size = 0, inode_count = 0;
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/* inode lookup table */
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squashfs_inode *inode_lookup_table = NULL;
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+/* clamp all timestamps to SOURCE_DATE_EPOCH */
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+time_t content_clamp_time = -1;
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+
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/* override filesystem creation time */
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time_t mkfs_fixed_time = -1;
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@@ -2246,6 +2249,8 @@ restat:
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pathname_reader(dir_ent), strerror(errno));
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goto read_err;
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}
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+ if(content_clamp_time != -1 && buf2.st_mtime >= content_clamp_time)
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+ buf2.st_mtime = content_clamp_time;
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if(read_size != buf2.st_size) {
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close(file);
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@@ -3101,7 +3106,7 @@ void dir_scan(squashfs_inode *inode, char *pathname,
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buf.st_mode = S_IRWXU | S_IRWXG | S_IRWXO | S_IFDIR;
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buf.st_uid = getuid();
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buf.st_gid = getgid();
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- buf.st_mtime = time(NULL);
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+ buf.st_mtime = content_clamp_time != -1 ? content_clamp_time : time(NULL);
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buf.st_dev = 0;
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buf.st_ino = 0;
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dir_ent->inode = lookup_inode2(&buf, PSEUDO_FILE_OTHER, 0);
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@@ -3127,6 +3115,8 @@ void dir_scan(squashfs_inode *inode, char *pathname,
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/* source directory has disappeared? */
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BAD_ERROR("Cannot stat source directory %s because %s\n",
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pathname, strerror(errno));
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+ if(content_clamp_time != -1 && buf.st_mtime >= content_clamp_time)
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+ buf.st_mtime = content_clamp_time;
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dir_ent->inode = lookup_inode(&buf);
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}
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@@ -3365,6 +3372,8 @@ struct dir_info *dir_scan1(char *filename, char *subpath,
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free_dir_entry(dir_ent);
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continue;
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}
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+ if(content_clamp_time != -1 && buf.st_mtime >= content_clamp_time)
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+ buf.st_mtime = content_clamp_time;
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if((buf.st_mode & S_IFMT) != S_IFREG &&
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(buf.st_mode & S_IFMT) != S_IFDIR &&
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@@ -3544,7 +3553,7 @@ void dir_scan2(struct dir_info *dir, struct pseudo *pseudo)
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buf.st_gid = pseudo_ent->dev->gid;
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buf.st_rdev = makedev(pseudo_ent->dev->major,
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pseudo_ent->dev->minor);
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- buf.st_mtime = time(NULL);
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+ buf.st_mtime = content_clamp_time != -1 ? content_clamp_time : time(NULL);
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buf.st_ino = pseudo_ino ++;
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if(pseudo_ent->dev->type == 'd') {
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@@ -5674,7 +5683,7 @@ printOptions:
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"%lu but was found to be: %llu \n", ULONG_MAX, epoch);
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EXIT_MKSQUASHFS();
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}
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- mkfs_fixed_time = (time_t)epoch;
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+ mkfs_fixed_time = content_clamp_time = (time_t)epoch;
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}
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/*
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--
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2.17.0
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