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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2024-09-26 11:47:24 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2024-09-26 11:47:24 +0200
commite9d1d3dc9aa4b53be536f97f253cc908e58429ec (patch)
tree6e79c9706ef7707890d40e7f1e894bd786c8f34b /bin/gensquashfs
parentcd1ec786238202b987a7624e763dadc725a46a67 (diff)
Add no-pad option to gensquashfs, sqfs2tar
This works similar to the option for mksquashfs, preventing the image from being padded to device block size. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'bin/gensquashfs')
-rw-r--r--bin/gensquashfs/gensquashfs.14
-rw-r--r--bin/gensquashfs/options.c6
2 files changed, 10 insertions, 0 deletions
diff --git a/bin/gensquashfs/gensquashfs.1 b/bin/gensquashfs/gensquashfs.1
index 88f58c4..48489a9 100644
--- a/bin/gensquashfs/gensquashfs.1
+++ b/bin/gensquashfs/gensquashfs.1
@@ -106,6 +106,10 @@ Generate an export table for NFS support.
Do not perform tail end packing on files that are larger than the specified
block size.
.TP
+\fB\-\-no\-pad\fR
+Do not pad the resulting image to device block size. May result in an image
+that cannot be loop mounted.
+.TP
\fB\-\-force\fR, \fB\-f\fR
Overwrite the output file if it exists.
.TP
diff --git a/bin/gensquashfs/options.c b/bin/gensquashfs/options.c
index f263bce..9bc79a6 100644
--- a/bin/gensquashfs/options.c
+++ b/bin/gensquashfs/options.c
@@ -8,10 +8,12 @@
enum {
ALL_ROOT_OPTION = 1,
+ NO_PAD_OPTION = 2,
};
static struct option long_opts[] = {
{ "all-root", no_argument, NULL, ALL_ROOT_OPTION },
+ { "no-pad", no_argument, NULL, NO_PAD_OPTION },
{ "set-uid", required_argument, NULL, 'u' },
{ "set-gid", required_argument, NULL, 'g' },
{ "compressor", required_argument, NULL, 'c' },
@@ -123,6 +125,7 @@ const char *extra_options =
" --exportable, -e Generate an export table for NFS support.\n"
" --no-tail-packing, -T Do not perform tail end packing on files that\n"
" are larger than block size.\n"
+" --no-pad Do not pad image to device block size.\n"
" --force, -f Overwrite the output file if it exists.\n"
" --quiet, -q Do not print out progress reports.\n"
" --help, -h Print help text and exit.\n"
@@ -212,6 +215,9 @@ void process_command_line(options_t *opt, int argc, char **argv)
opt->force_uid = true;
opt->force_gid = true;
break;
+ case NO_PAD_OPTION:
+ opt->cfg.no_pad = true;
+ break;
case 'u':
opt->force_uid_value = strtol(optarg, NULL, 0);
opt->force_uid = true;