Merge pull request #40175 from ruuda/reproducible-squashfs
squashfsTools: apply reproducibility patches
This commit is contained in:
Matthew Justin Bauer
GitHub
commit
2779725c35
@ -3239,6 +3239,11 @@
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github = "rushmorem";
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github = "rushmorem";
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name = "Rushmore Mushambi";
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name = "Rushmore Mushambi";
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};
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};
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ruuda = {
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email = "dev+nix@veniogames.com";
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github = "ruuda";
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name = "Ruud van Asseldonk";
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};
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rvl = {
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rvl = {
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email = "dev+nix@rodney.id.au";
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email = "dev+nix@rodney.id.au";
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github = "rvl";
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github = "rvl";
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@ -0,0 +1,90 @@
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From 0ab12a8585373be2de5129e14d979c62e7a90d82 Mon Sep 17 00:00:00 2001
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From: Chris Lamb <lamby@debian.org>
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Date: Mon, 21 Nov 2016 09:33:05 +0100
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Subject: [PATCH] If SOURCE_DATE_EPOCH is set, override timestamps with that
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value.
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See https://reproducible-builds.org/specs/source-date-epoch/ for more
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information about this environment variable.
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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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Signed-off-by: Chris Lamb <lamby@debian.org>
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---
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squashfs-tools/mksquashfs.c | 38 ++++++++++++++++++++++++++++++++++++-
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1 file changed, 37 insertions(+), 1 deletion(-)
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diff --git a/squashfs-tools/mksquashfs.c b/squashfs-tools/mksquashfs.c
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index c2098bd..b49e956 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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+/* override filesystem creation time */
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+time_t mkfs_fixed_time = -1;
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+
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/* in memory directory data */
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#define I_COUNT_SIZE 128
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#define DIR_ENTRIES 32
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@@ -5104,6 +5107,9 @@ int main(int argc, char *argv[])
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int total_mem = get_default_phys_mem();
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int progress = TRUE;
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int force_progress = FALSE;
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+ char *source_date_epoch, *endptr;
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+ unsigned long long epoch;
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+
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struct file_buffer **fragment = NULL;
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if(argc > 1 && strcmp(argv[1], "-version") == 0) {
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@@ -5641,6 +5647,36 @@ printOptions:
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}
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}
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+ /* if SOURCE_DATE_EPOCH is set, use that timestamp for the mkfs time */
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+ source_date_epoch = getenv("SOURCE_DATE_EPOCH");
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+ if(source_date_epoch) {
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+ errno = 0;
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+ epoch = strtoull(source_date_epoch, &endptr, 10);
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+ if((errno == ERANGE && (epoch == ULLONG_MAX || epoch == 0))
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+ || (errno != 0 && epoch == 0)) {
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+ ERROR("Environment variable $SOURCE_DATE_EPOCH: "
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+ "strtoull: %s\n", strerror(errno));
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+ EXIT_MKSQUASHFS();
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+ }
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+ if(endptr == source_date_epoch) {
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+ ERROR("Environment variable $SOURCE_DATE_EPOCH: "
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+ "No digits were found: %s\n", endptr);
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+ EXIT_MKSQUASHFS();
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+ }
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+ if(*endptr != '\0') {
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+ ERROR("Environment variable $SOURCE_DATE_EPOCH: "
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+ "Trailing garbage: %s\n", endptr);
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+ EXIT_MKSQUASHFS();
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+ }
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+ if(epoch > ULONG_MAX) {
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+ ERROR("Environment variable $SOURCE_DATE_EPOCH: "
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+ "value must be smaller than or equal to "
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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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+ }
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+
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/*
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* Some compressors may need the options to be checked for validity
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* once all the options have been processed
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@@ -5993,7 +6029,7 @@ printOptions:
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sBlk.flags = SQUASHFS_MKFLAGS(noI, noD, noF, noX, no_fragments,
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always_use_fragments, duplicate_checking, exportable,
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no_xattrs, comp_opts);
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- sBlk.mkfs_time = time(NULL);
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+ sBlk.mkfs_time = mkfs_fixed_time != -1 ? mkfs_fixed_time : time(NULL);
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disable_info();
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--
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2.17.0
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@ -0,0 +1,83 @@
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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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@ -0,0 +1,220 @@
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|
From afc0c76a170bd17cbd29bbec6ae6d2227e398570 Mon Sep 17 00:00:00 2001
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|
From: Alexander Couzens <lynxis@fe80.eu>
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Date: Fri, 13 Jan 2017 22:00:37 +0100
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Subject: [PATCH] remove frag_deflator_thread
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frag_deflator_thread compress fragments.
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Replace the deflator_thread with a function and
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use the function instead of the to_frag queue.
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---
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|
squashfs-tools/info.c | 5 ---
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squashfs-tools/mksquashfs.c | 76 +++++++++++++------------------------
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|
squashfs-tools/mksquashfs.h | 2 +-
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squashfs-tools/restore.c | 15 +-------
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|
4 files changed, 30 insertions(+), 68 deletions(-)
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|
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|
diff --git a/squashfs-tools/info.c b/squashfs-tools/info.c
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index 7968c77..028d578 100644
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--- a/squashfs-tools/info.c
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+++ b/squashfs-tools/info.c
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@@ -96,11 +96,6 @@ void dump_state()
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printf("compressed block queue (deflate thread(s) -> main thread)\n");
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|
dump_seq_queue(to_main, 0);
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|
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|
- printf("uncompressed packed fragment queue (main thread -> fragment"
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|
- " deflate thread(s))\n");
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- dump_queue(to_frag);
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|
-
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|
-
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|
printf("locked frag queue (compressed frags waiting while multi-block"
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|
" file is written)\n");
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|
dump_queue(locked_fragment);
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|
diff --git a/squashfs-tools/mksquashfs.c b/squashfs-tools/mksquashfs.c
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|
index cf48e40..cacf14c 100644
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|
--- a/squashfs-tools/mksquashfs.c
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|
+++ b/squashfs-tools/mksquashfs.c
|
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|
@@ -270,10 +270,10 @@ unsigned int sid_count = 0, suid_count = 0, sguid_count = 0;
|
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|
struct cache *reader_buffer, *fragment_buffer, *reserve_cache;
|
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|
struct cache *bwriter_buffer, *fwriter_buffer;
|
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|
struct queue *to_reader, *to_deflate, *to_writer, *from_writer,
|
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|
- *to_frag, *locked_fragment, *to_process_frag;
|
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|
+ *locked_fragment, *to_process_frag;
|
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|
struct seq_queue *to_main;
|
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|
pthread_t reader_thread, writer_thread, main_thread;
|
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|
-pthread_t *deflator_thread, *frag_deflator_thread, *frag_thread;
|
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|
+pthread_t *deflator_thread, *frag_thread;
|
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|
pthread_t *restore_thread = NULL;
|
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|
pthread_mutex_t fragment_mutex = PTHREAD_MUTEX_INITIALIZER;
|
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|
pthread_mutex_t pos_mutex = PTHREAD_MUTEX_INITIALIZER;
|
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|
@@ -323,7 +323,7 @@ struct dir_info *scan1_opendir(char *pathname, char *subpath, int depth);
|
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|
void write_filesystem_tables(struct squashfs_super_block *sBlk, int nopad);
|
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|
unsigned short get_checksum_mem(char *buff, int bytes);
|
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|
void check_usable_phys_mem(int total_mem);
|
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|
-
|
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|
+void frag_deflator(struct file_buffer *file_buffer);
|
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|
|
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|
void prep_exit()
|
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|
{
|
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|
@@ -1540,7 +1540,7 @@ void write_fragment(struct file_buffer *fragment)
|
||||||
|
pthread_mutex_lock(&fragment_mutex);
|
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|
fragment_table[fragment->block].unused = 0;
|
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|
fragments_outstanding ++;
|
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|
- queue_put(to_frag, fragment);
|
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|
+ frag_deflator(fragment);
|
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|
pthread_cleanup_pop(1);
|
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|
}
|
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|
|
||||||
|
@@ -2412,51 +2412,34 @@ void *deflator(void *arg)
|
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|
}
|
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|
|
||||||
|
|
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|
-void *frag_deflator(void *arg)
|
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|
+void frag_deflator(struct file_buffer *file_buffer)
|
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|
{
|
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|
- void *stream = NULL;
|
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|
- int res;
|
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|
|
||||||
|
- res = compressor_init(comp, &stream, block_size, 1);
|
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|
- if(res)
|
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|
- BAD_ERROR("frag_deflator:: compressor_init failed\n");
|
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|
-
|
||||||
|
- pthread_cleanup_push((void *) pthread_mutex_unlock, &fragment_mutex);
|
||||||
|
-
|
||||||
|
- while(1) {
|
||||||
|
- int c_byte, compressed_size;
|
||||||
|
- struct file_buffer *file_buffer = queue_get(to_frag);
|
||||||
|
- struct file_buffer *write_buffer =
|
||||||
|
+ int c_byte, compressed_size;
|
||||||
|
+ struct file_buffer *write_buffer =
|
||||||
|
cache_get(fwriter_buffer, file_buffer->block);
|
||||||
|
|
||||||
|
- c_byte = mangle2(stream, write_buffer->data, file_buffer->data,
|
||||||
|
- file_buffer->size, block_size, noF, 1);
|
||||||
|
- compressed_size = SQUASHFS_COMPRESSED_SIZE_BLOCK(c_byte);
|
||||||
|
- write_buffer->size = compressed_size;
|
||||||
|
- pthread_mutex_lock(&fragment_mutex);
|
||||||
|
- if(fragments_locked == FALSE) {
|
||||||
|
- fragment_table[file_buffer->block].size = c_byte;
|
||||||
|
- fragment_table[file_buffer->block].start_block = bytes;
|
||||||
|
- write_buffer->block = bytes;
|
||||||
|
- bytes += compressed_size;
|
||||||
|
- fragments_outstanding --;
|
||||||
|
- queue_put(to_writer, write_buffer);
|
||||||
|
- pthread_mutex_unlock(&fragment_mutex);
|
||||||
|
- TRACE("Writing fragment %lld, uncompressed size %d, "
|
||||||
|
- "compressed size %d\n", file_buffer->block,
|
||||||
|
- file_buffer->size, compressed_size);
|
||||||
|
- } else {
|
||||||
|
- add_pending_fragment(write_buffer, c_byte,
|
||||||
|
- file_buffer->block);
|
||||||
|
- pthread_mutex_unlock(&fragment_mutex);
|
||||||
|
- }
|
||||||
|
- cache_block_put(file_buffer);
|
||||||
|
+ c_byte = mangle2(stream, write_buffer->data, file_buffer->data,
|
||||||
|
+ file_buffer->size, block_size, noF, 1);
|
||||||
|
+ compressed_size = SQUASHFS_COMPRESSED_SIZE_BLOCK(c_byte);
|
||||||
|
+ write_buffer->size = compressed_size;
|
||||||
|
+ if(fragments_locked == FALSE) {
|
||||||
|
+ fragment_table[file_buffer->block].size = c_byte;
|
||||||
|
+ fragment_table[file_buffer->block].start_block = bytes;
|
||||||
|
+ write_buffer->block = bytes;
|
||||||
|
+ bytes += compressed_size;
|
||||||
|
+ fragments_outstanding --;
|
||||||
|
+ queue_put(to_writer, write_buffer);
|
||||||
|
+ TRACE("Writing fragment %lld, uncompressed size %d, "
|
||||||
|
+ "compressed size %d\n", file_buffer->block,
|
||||||
|
+ file_buffer->size, compressed_size);
|
||||||
|
+ } else {
|
||||||
|
+ add_pending_fragment(write_buffer, c_byte,
|
||||||
|
+ file_buffer->block);
|
||||||
|
}
|
||||||
|
-
|
||||||
|
- pthread_cleanup_pop(0);
|
||||||
|
+ cache_block_put(file_buffer);
|
||||||
|
}
|
||||||
|
|
||||||
|
-
|
||||||
|
struct file_buffer *get_file_buffer()
|
||||||
|
{
|
||||||
|
struct file_buffer *file_buffer = seq_queue_get(to_main);
|
||||||
|
@@ -4257,19 +4240,17 @@ void initialise_threads(int readq, int fragq, int bwriteq, int fwriteq,
|
||||||
|
multiply_overflow(processors * 3, sizeof(pthread_t)))
|
||||||
|
BAD_ERROR("Processors too large\n");
|
||||||
|
|
||||||
|
- deflator_thread = malloc(processors * 3 * sizeof(pthread_t));
|
||||||
|
+ deflator_thread = malloc(processors * 2 * sizeof(pthread_t));
|
||||||
|
if(deflator_thread == NULL)
|
||||||
|
MEM_ERROR();
|
||||||
|
|
||||||
|
- frag_deflator_thread = &deflator_thread[processors];
|
||||||
|
- frag_thread = &frag_deflator_thread[processors];
|
||||||
|
+ frag_thread = &deflator_thread[processors];
|
||||||
|
|
||||||
|
to_reader = queue_init(1);
|
||||||
|
to_deflate = queue_init(reader_size);
|
||||||
|
to_process_frag = queue_init(reader_size);
|
||||||
|
to_writer = queue_init(bwriter_size + fwriter_size);
|
||||||
|
from_writer = queue_init(1);
|
||||||
|
- to_frag = queue_init(fragment_size);
|
||||||
|
locked_fragment = queue_init(fragment_size);
|
||||||
|
to_main = seq_queue_init();
|
||||||
|
reader_buffer = cache_init(block_size, reader_size, 0, 0);
|
||||||
|
@@ -4285,9 +4266,6 @@ void initialise_threads(int readq, int fragq, int bwriteq, int fwriteq,
|
||||||
|
for(i = 0; i < processors; i++) {
|
||||||
|
if(pthread_create(&deflator_thread[i], NULL, deflator, NULL))
|
||||||
|
BAD_ERROR("Failed to create thread\n");
|
||||||
|
- if(pthread_create(&frag_deflator_thread[i], NULL, frag_deflator,
|
||||||
|
- NULL) != 0)
|
||||||
|
- BAD_ERROR("Failed to create thread\n");
|
||||||
|
if(pthread_create(&frag_thread[i], NULL, frag_thrd,
|
||||||
|
(void *) destination_file) != 0)
|
||||||
|
BAD_ERROR("Failed to create thread\n");
|
||||||
|
diff --git a/squashfs-tools/mksquashfs.h b/squashfs-tools/mksquashfs.h
|
||||||
|
index 55708a3..dc5bde4 100644
|
||||||
|
--- a/squashfs-tools/mksquashfs.h
|
||||||
|
+++ b/squashfs-tools/mksquashfs.h
|
||||||
|
@@ -135,7 +135,7 @@ struct append_file {
|
||||||
|
extern struct cache *reader_buffer, *fragment_buffer, *reserve_cache;
|
||||||
|
struct cache *bwriter_buffer, *fwriter_buffer;
|
||||||
|
extern struct queue *to_reader, *to_deflate, *to_writer, *from_writer,
|
||||||
|
- *to_frag, *locked_fragment, *to_process_frag;
|
||||||
|
+ *locked_fragment, *to_process_frag;
|
||||||
|
extern struct append_file **file_mapping;
|
||||||
|
extern struct seq_queue *to_main;
|
||||||
|
extern pthread_mutex_t fragment_mutex, dup_mutex;
|
||||||
|
diff --git a/squashfs-tools/restore.c b/squashfs-tools/restore.c
|
||||||
|
index 5e336b3..a7aaf2e 100644
|
||||||
|
--- a/squashfs-tools/restore.c
|
||||||
|
+++ b/squashfs-tools/restore.c
|
||||||
|
@@ -47,8 +47,8 @@
|
||||||
|
#define TRUE 1
|
||||||
|
|
||||||
|
extern pthread_t reader_thread, writer_thread, main_thread;
|
||||||
|
-extern pthread_t *deflator_thread, *frag_deflator_thread, *frag_thread;
|
||||||
|
-extern struct queue *to_deflate, *to_writer, *to_frag, *to_process_frag;
|
||||||
|
+extern pthread_t *deflator_thread, *frag_thread;
|
||||||
|
+extern struct queue *to_deflate, *to_writer, *to_process_frag;
|
||||||
|
extern struct seq_queue *to_main;
|
||||||
|
extern void restorefs();
|
||||||
|
extern int processors;
|
||||||
|
@@ -120,17 +120,6 @@ void *restore_thrd(void *arg)
|
||||||
|
pthread_cancel(main_thread);
|
||||||
|
pthread_join(main_thread, NULL);
|
||||||
|
|
||||||
|
- /* then flush the main thread to fragment deflator thread(s)
|
||||||
|
- * queue. The fragment deflator thread(s) will idle
|
||||||
|
- */
|
||||||
|
- queue_flush(to_frag);
|
||||||
|
-
|
||||||
|
- /* now kill the fragment deflator thread(s) */
|
||||||
|
- for(i = 0; i < processors; i++)
|
||||||
|
- pthread_cancel(frag_deflator_thread[i]);
|
||||||
|
- for(i = 0; i < processors; i++)
|
||||||
|
- pthread_join(frag_deflator_thread[i], NULL);
|
||||||
|
-
|
||||||
|
/*
|
||||||
|
* then flush the main thread/fragment deflator thread(s)
|
||||||
|
* to writer thread queue. The writer thread will idle
|
||||||
|
--
|
||||||
|
2.17.0
|
||||||
|
|
||||||
@ -15,6 +15,15 @@ stdenv.mkDerivation rec {
|
|||||||
rev = "9c1db6d13a51a2e009f0027ef336ce03624eac0d";
|
rev = "9c1db6d13a51a2e009f0027ef336ce03624eac0d";
|
||||||
};
|
};
|
||||||
|
|
||||||
|
# These patches ensures that mksquashfs output is reproducible.
|
||||||
|
# See also https://reproducible-builds.org/docs/system-images/
|
||||||
|
# and https://github.com/NixOS/nixpkgs/issues/40144.
|
||||||
|
patches = [
|
||||||
|
./0001-If-SOURCE_DATE_EPOCH-is-set-override-timestamps-with.patch
|
||||||
|
./0002-If-SOURCE_DATE_EPOCH-is-set-also-clamp-content-times.patch
|
||||||
|
./0003-remove-frag-deflator-thread.patch
|
||||||
|
];
|
||||||
|
|
||||||
buildInputs = [ zlib xz ]
|
buildInputs = [ zlib xz ]
|
||||||
++ stdenv.lib.optional lz4Support lz4;
|
++ stdenv.lib.optional lz4Support lz4;
|
||||||
|
|
||||||
@ -29,5 +38,7 @@ stdenv.mkDerivation rec {
|
|||||||
homepage = http://squashfs.sourceforge.net/;
|
homepage = http://squashfs.sourceforge.net/;
|
||||||
description = "Tool for creating and unpacking squashfs filesystems";
|
description = "Tool for creating and unpacking squashfs filesystems";
|
||||||
platforms = stdenv.lib.platforms.linux;
|
platforms = stdenv.lib.platforms.linux;
|
||||||
|
license = stdenv.lib.licenses.gpl2Plus;
|
||||||
|
maintainers = with stdenv.lib.maintainers; [ ruuda ];
|
||||||
};
|
};
|
||||||
}
|
}
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user