cpio: implement -R/--owner
Implement -R/--owner to force ownership of files.
function old new delta
cpio_main 532 586 +54
get_header_cpio 909 939 +30
print 36 65 +29
cpio_o 804 832 +28
cpio_TRAILER - 11 +11
packed_usage 30667 30662 -5
static.trailer 11 - -11
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 4/1 up/down: 152/-16) Total: 136 bytes
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/archival/Kbuild.src b/archival/Kbuild.src
index a6fd2ea..b3a7d53 100644
--- a/archival/Kbuild.src
+++ b/archival/Kbuild.src
@@ -4,7 +4,7 @@
#
# Licensed under GPLv2, see file LICENSE in this source tree.
-libs-y += libarchive/
+libs-y += libarchive/
lib-y:=
diff --git a/archival/cpio.c b/archival/cpio.c
index cdc16c1..82b3fe5 100644
--- a/archival/cpio.c
+++ b/archival/cpio.c
@@ -46,7 +46,7 @@
//kbuild:lib-$(CONFIG_CPIO) += cpio.o
//usage:#define cpio_trivial_usage
-//usage: "[-dmvu] [-F FILE]" IF_FEATURE_CPIO_O(" [-H newc]")
+//usage: "[-dmvu] [-F FILE] [-R USER[:GRP]]" IF_FEATURE_CPIO_O(" [-H newc]")
//usage: " [-ti"IF_FEATURE_CPIO_O("o")"]" IF_FEATURE_CPIO_P(" [-p DIR]")
//usage: " [EXTR_FILE]..."
//usage:#define cpio_full_usage "\n\n"
@@ -71,6 +71,7 @@
//usage: "\n -v Verbose"
//usage: "\n -u Overwrite"
//usage: "\n -F FILE Input (-t,-i,-p) or output (-o) file"
+//usage: "\n -R USER[:GRP] Set owner of created files"
//usage: IF_FEATURE_CPIO_O(
//usage: "\n -H newc Archive format"
//usage: )
@@ -130,7 +131,7 @@
-I FILE File to use instead of standard input
-L, --dereference Dereference symbolic links (copy the files
that they point to instead of copying the links)
- -R, --owner=[USER][:.][GROUP] Set owner of created files
+ -R, --owner=[USER][:.][GRP] Set owner of created files
Options valid in --extract and --pass-through modes:
-d, --make-directories Create leading directories where needed
@@ -150,7 +151,8 @@
OPT_PRESERVE_MTIME = (1 << 6),
OPT_DEREF = (1 << 7),
OPT_FILE = (1 << 8),
- OPTBIT_FILE = 8,
+ OPT_OWNER = (1 << 9),
+ OPTBIT_OWNER = 9,
IF_FEATURE_CPIO_O(OPTBIT_CREATE ,)
IF_FEATURE_CPIO_O(OPTBIT_FORMAT ,)
IF_FEATURE_CPIO_P(OPTBIT_PASSTHROUGH,)
@@ -163,7 +165,17 @@
OPT_2STDOUT = IF_LONG_OPTS( (1 << OPTBIT_2STDOUT )) + 0,
};
-#define OPTION_STR "it0uvdmLF:"
+#define OPTION_STR "it0uvdmLF:R:"
+
+struct globals {
+ struct bb_uidgid_t owner_ugid;
+} FIX_ALIASING;
+#define G (*(struct globals*)&bb_common_bufsiz1)
+void BUG_cpio_globals_too_big(void);
+#define INIT_G() do { \
+ G.owner_ugid.uid = -1L; \
+ G.owner_ugid.gid = -1L; \
+} while (0)
#if ENABLE_FEATURE_CPIO_O
static off_t cpio_pad4(off_t size)
@@ -181,7 +193,6 @@
* It's ok to exit instead of return. */
static NOINLINE int cpio_o(void)
{
- static const char trailer[] ALIGN1 = "TRAILER!!!";
struct name_s {
struct name_s *next;
char name[1];
@@ -223,6 +234,11 @@
bb_simple_perror_msg_and_die(name);
}
+ if (G.owner_ugid.uid != (uid_t)-1L)
+ st.st_uid = G.owner_ugid.uid;
+ if (G.owner_ugid.gid != (gid_t)-1L)
+ st.st_gid = G.owner_ugid.gid;
+
if (!(S_ISLNK(st.st_mode) || S_ISREG(st.st_mode)))
st.st_size = 0; /* paranoia */
@@ -275,7 +291,7 @@
} else {
/* If no (more) hardlinks to output,
* output "trailer" entry */
- name = trailer;
+ name = cpio_TRAILER;
/* st.st_size == 0 is a must, but for uniformity
* in the output, we zero out everything */
memset(&st, 0, sizeof(st));
@@ -323,7 +339,7 @@
}
if (!line) {
- if (name != trailer)
+ if (name != cpio_TRAILER)
goto next_link;
/* TODO: GNU cpio pads trailer to 512 bytes, do we want that? */
return EXIT_SUCCESS;
@@ -339,6 +355,7 @@
{
archive_handle_t *archive_handle;
char *cpio_filename;
+ char *cpio_owner;
IF_FEATURE_CPIO_O(const char *cpio_fmt = "";)
unsigned opt;
@@ -353,12 +370,14 @@
"pass-through\0" No_argument "p"
#endif
#endif
+ "owner\0" Required_argument "R"
"verbose\0" No_argument "v"
"quiet\0" No_argument "\xff"
"to-stdout\0" No_argument "\xfe"
;
#endif
+ INIT_G();
archive_handle = init_handle();
/* archive_handle->src_fd = STDIN_FILENO; - done by init_handle */
archive_handle->ah_flags = ARCHIVE_EXTRACT_NEWER;
@@ -369,14 +388,21 @@
/* -L makes sense only with -o or -p */
#if !ENABLE_FEATURE_CPIO_O
- opt = getopt32(argv, OPTION_STR, &cpio_filename);
+ opt = getopt32(argv, OPTION_STR, &cpio_filename, &cpio_owner);
+#else
+ opt = getopt32(argv, OPTION_STR "oH:" IF_FEATURE_CPIO_P("p"),
+ &cpio_filename, &cpio_owner, &cpio_fmt);
+#endif
argv += optind;
+ if (opt & OPT_OWNER) { /* -R */
+ parse_chown_usergroup_or_die(&G.owner_ugid, cpio_owner);
+ archive_handle->cpio__owner = G.owner_ugid;
+ }
+#if !ENABLE_FEATURE_CPIO_O
if (opt & OPT_FILE) { /* -F */
xmove_fd(xopen(cpio_filename, O_RDONLY), STDIN_FILENO);
}
#else
- opt = getopt32(argv, OPTION_STR "oH:" IF_FEATURE_CPIO_P("p"), &cpio_filename, &cpio_fmt);
- argv += optind;
if ((opt & (OPT_FILE|OPT_CREATE)) == OPT_FILE) { /* -F without -o */
xmove_fd(xopen(cpio_filename, O_RDONLY), STDIN_FILENO);
}
diff --git a/archival/libarchive/Kbuild.src b/archival/libarchive/Kbuild.src
index b7faaf7..b159a78 100644
--- a/archival/libarchive/Kbuild.src
+++ b/archival/libarchive/Kbuild.src
@@ -4,7 +4,7 @@
#
# Licensed under GPLv2 or later, see file LICENSE in this source tree.
-lib-y:=
+lib-y:= common.o
COMMON_FILES:= \
\
diff --git a/archival/libarchive/common.c b/archival/libarchive/common.c
new file mode 100644
index 0000000..dd69d22
--- /dev/null
+++ b/archival/libarchive/common.c
@@ -0,0 +1,9 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
+
+#include "libbb.h"
+#include "bb_archive.h"
+
+const char cpio_TRAILER[] = "TRAILER!!!";
diff --git a/archival/libarchive/get_header_cpio.c b/archival/libarchive/get_header_cpio.c
index 7861d1f..badd4a8 100644
--- a/archival/libarchive/get_header_cpio.c
+++ b/archival/libarchive/get_header_cpio.c
@@ -52,6 +52,11 @@
&major, &minor, &namesize) != 10)
bb_error_msg_and_die("damaged cpio file");
file_header->mode = mode;
+ /* "cpio -R USER:GRP" support: */
+ if (archive_handle->cpio__owner.uid != (uid_t)-1L)
+ uid = archive_handle->cpio__owner.uid;
+ if (archive_handle->cpio__owner.gid != (gid_t)-1L)
+ gid = archive_handle->cpio__owner.gid;
file_header->uid = uid;
file_header->gid = gid;
file_header->mtime = mtime;
@@ -75,7 +80,7 @@
/* Update offset amount and skip padding before file contents */
data_align(archive_handle, 4);
- if (strcmp(file_header->name, "TRAILER!!!") == 0) {
+ if (strcmp(file_header->name, cpio_TRAILER) == 0) {
/* Always round up. ">> 9" divides by 512 */
archive_handle->cpio__blocks = (uoff_t)(archive_handle->offset + 511) >> 9;
goto create_hardlinks;
diff --git a/coreutils/chown.c b/coreutils/chown.c
index 679c0d8..eaa1ee2 100644
--- a/coreutils/chown.c
+++ b/coreutils/chown.c
@@ -11,9 +11,9 @@
/* http://www.opengroup.org/onlinepubs/007904975/utilities/chown.html */
//usage:#define chown_trivial_usage
-//usage: "[-Rh"IF_DESKTOP("LHPcvf")"]... OWNER[<.|:>[GROUP]] FILE..."
+//usage: "[-Rh"IF_DESKTOP("LHPcvf")"]... USER[:[GRP]] FILE..."
//usage:#define chown_full_usage "\n\n"
-//usage: "Change the owner and/or group of each FILE to OWNER and/or GROUP\n"
+//usage: "Change the owner and/or group of each FILE to USER and/or GRP\n"
//usage: "\n -R Recurse"
//usage: "\n -h Affect symlinks instead of symlink targets"
//usage: IF_DESKTOP(
diff --git a/include/bb_archive.h b/include/bb_archive.h
index 5d9e24c..2329d02 100644
--- a/include/bb_archive.h
+++ b/include/bb_archive.h
@@ -95,6 +95,7 @@
#endif
#if ENABLE_CPIO || ENABLE_RPM2CPIO || ENABLE_RPM
uoff_t cpio__blocks;
+ struct bb_uidgid_t cpio__owner;
struct hardlinks_t *cpio__hardlinks_to_create;
struct hardlinks_t *cpio__created_hardlinks;
#endif
@@ -159,6 +160,8 @@
};
+extern const char cpio_TRAILER[];
+
archive_handle_t *init_handle(void) FAST_FUNC;