diff options
| author | juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2013-09-25 20:03:19 +0000 |
|---|---|---|
| committer | juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2013-09-25 20:03:19 +0000 |
| commit | c75347fe8b76d2babc59a3ccfb81758ce49c7efc (patch) | |
| tree | 3b8154df230163178bb79a06977fa6d9f1533bf0 | |
| parent | c1eca93e9542560fbe1b80a85666e2297c28da9d (diff) | |
tools/padjffs2: allow to specify extra offset
This will be useful for firmware images which are
using a custom header.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38195 3c298f89-4303-0410-b956-a3cf2f4a3e73
| -rw-r--r-- | tools/padjffs2/src/padjffs2.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/tools/padjffs2/src/padjffs2.c b/tools/padjffs2/src/padjffs2.c index 58d99140d9..aa932efa6f 100644 --- a/tools/padjffs2/src/padjffs2.c +++ b/tools/padjffs2/src/padjffs2.c @@ -19,6 +19,7 @@ #include <sys/stat.h> static char *progname; +static unsigned int xtra_offset; static unsigned char eof_mark[4] = {0xde, 0xad, 0xc0, 0xde}; #define ERR(fmt, ...) do { \ @@ -63,6 +64,8 @@ static int pad_image(char *name, uint32_t pad_mask) memset(buf, '\xff', BUF_SIZE); + in_len += xtra_offset; + out_len = in_len; while (pad_mask) { uint32_t mask; @@ -83,7 +86,7 @@ static int pad_image(char *name, uint32_t pad_mask) pad_mask &= ~mask; } - printf("padding image to %08x\n", (unsigned int) in_len); + printf("padding image to %08x\n", (unsigned int) in_len - xtra_offset); while (out_len < in_len) { ssize_t len; @@ -131,14 +134,22 @@ int main(int argc, char* argv[]) if (argc < 2) { fprintf(stderr, - "Usage: %s file [pad0] [pad1] [padN]\n", + "Usage: %s file [-x <xtra offset>] [pad0] [pad1] [padN]\n", progname); goto out; } pad_mask = 0; - for (i = 2; i < argc; i++) + for (i = 2; i < argc; i++) { + if (i == 2 && strcmp(argv[i], "-x") == 0) { + i++; + xtra_offset = strtoul(argv[i], NULL, 0); + fprintf(stderr, "assuming %u bytes offset\n", + xtra_offset); + continue; + } pad_mask |= strtoul(argv[i], NULL, 0) * 1024; + } if (pad_mask == 0) pad_mask = (4 * 1024) | (8 * 1024) | (64 * 1024) | |