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| author | Matt Stark <msta@google.com> | 2022-10-17 16:41:57 +1100 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2023-02-01 11:26:03 -0500 |
| commit | c4efea445e952c06a410cc3b0b89763cc4650fb7 (patch) | |
| tree | 2bc3aa81d99a0b39de9a2e23a15cc9ebdb398889 | |
| parent | 674d844c52cba11a5a80cb864161b97f1529fe5c (diff) | |
| download | e2fsprogs-c4efea445e952c06a410cc3b0b89763cc4650fb7.tar.gz | |
fuse2fs: support "fuse2fs -o offset=<bytes>"
This works the same way that mount -o offset=<bytes> works, and can be
used to mount particular partitions from a whole disk image.
Signed-off-by: Matt Stark <msta@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| -rw-r--r-- | misc/fuse2fs.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/misc/fuse2fs.c b/misc/fuse2fs.c index 6d4bcf4f..0dc77ead 100644 --- a/misc/fuse2fs.c +++ b/misc/fuse2fs.c @@ -325,6 +325,7 @@ struct fuse2fs { int fakeroot; int alloc_all_blocks; int norecovery; + unsigned long offset; FILE *err_fp; unsigned int next_generation; }; @@ -3660,6 +3661,7 @@ static struct fuse_opt fuse2fs_opts[] = { FUSE2FS_OPT("fuse2fs_debug", debug, 1), FUSE2FS_OPT("no_default_opts", no_default_opts, 1), FUSE2FS_OPT("norecovery", norecovery, 1), + FUSE2FS_OPT("offset=%lu", offset, 0), FUSE_OPT_KEY("-V", FUSE2FS_VERSION), FUSE_OPT_KEY("--version", FUSE2FS_VERSION), @@ -3698,6 +3700,7 @@ static int fuse2fs_opt_proc(void *data, const char *arg, " -o minixdf minix-style df\n" " -o fakeroot pretend to be root for permission checks\n" " -o no_default_opts do not include default fuse options\n" + " -o offset=<bytes> similar to mount -o offset=<bytes>, mount the partition starting at <bytes>\n" " -o norecovery don't replay the journal (implies ro)\n" " -o fuse2fs_debug enable fuse2fs debugging\n" "\n", @@ -3777,7 +3780,9 @@ int main(int argc, char *argv[]) ret = 2; if (!fctx.ro) flags |= EXT2_FLAG_RW; - err = ext2fs_open2(fctx.device, NULL, flags, 0, 0, unix_io_manager, + char options[50]; + sprintf(options, "offset=%lu", fctx.offset); + err = ext2fs_open2(fctx.device, options, flags, 0, 0, unix_io_manager, &global_fs); if (err) { printf(_("%s: %s.\n"), fctx.device, error_message(err)); |