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| author | Rob Landley <rob@landley.net> | 2017-06-04 13:15:51 -0500 |
|---|---|---|
| committer | Rob Landley <rob@landley.net> | 2017-06-04 13:15:51 -0500 |
| commit | 32550751997db5b15baca56e72c54ed8ade53bd6 (patch) | |
| tree | b4d89a5bd7287c554eb8c5635fc4ea93dcd6d28d | |
| parent | 51a1e91d263ad14ffd4b57ff0c22d3ff02799ceb (diff) | |
| download | toybox-32550751997db5b15baca56e72c54ed8ade53bd6.tar.gz | |
Don't add cpio TRAILER!!! entry by default, add new --trailer option if you
want that. (This lets you concatenate cpio archives with "cat". Kernel's
initramfs extractor doesn't need it.)
| -rw-r--r-- | toys/posix/cpio.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/toys/posix/cpio.c b/toys/posix/cpio.c index 5524dba2..90c8107f 100644 --- a/toys/posix/cpio.c +++ b/toys/posix/cpio.c @@ -16,7 +16,7 @@ * rdevmajor rdevminor namesize check * This is the equiavlent of mode -H newc when using GNU CPIO. -USE_CPIO(NEWTOY(cpio, "(no-preserve-owner)mduH:p:|i|t|F:v(verbose)o|[!pio][!pot][!pF]", TOYFLAG_BIN)) +USE_CPIO(NEWTOY(cpio, "(no-preserve-owner)(trailer)mduH:p:|i|t|F:v(verbose)o|[!pio][!pot][!pF]", TOYFLAG_BIN)) config CPIO bool "cpio" @@ -34,6 +34,7 @@ config CPIO -t test files (list only, stdin=archive, stdout=list of files) -v verbose (list files during create/extract) --no-preserve-owner (don't set ownership during extract) + --trailer Add legacy trailer (prevents concatenation). */ #define FOR_cpio @@ -113,8 +114,8 @@ void cpio_main(void) int test = toys.optflags & FLAG_t, err = 0; // Read header and name. - xreadall(afd, toybuf, 110); - if (memcmp(toybuf, "070701", 6)) error_exit("bad cpio magic"); + if (!(size =readall(afd, toybuf, 110))) break; + if (size != 110 || memcmp(toybuf, "070701", 6)) error_exit("bad header"); tofree = name = strpad(afd, x8u(toybuf+94), 110); if (!strcmp("TRAILER!!!", name)) { if (CFG_TOYBOX_FREE) free(tofree); @@ -275,9 +276,11 @@ void cpio_main(void) } free(name); - memset(toybuf, 0, sizeof(toybuf)); - xwrite(afd, toybuf, - sprintf(toybuf, "070701%040X%056X%08XTRAILER!!!", 1, 0x0b, 0)+4); + if (FLAG_trailer) { + memset(toybuf, 0, sizeof(toybuf)); + xwrite(afd, toybuf, + sprintf(toybuf, "070701%040X%056X%08XTRAILER!!!", 1, 0x0b, 0)+4); + } } if (TT.archive) xclose(afd); |