mirror of
https://github.com/topjohnwu/ndk-busybox.git
synced 2024-11-23 11:49:39 +00:00
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>
This commit is contained in:
Aaro Koskinen
Denys Vlasenko
parent
93dd9fd90a
commit
2735bc00e3
@ -4,7 +4,7 @@
|
||||
#
|
||||
# Licensed under GPLv2, see file LICENSE in this source tree.
|
||||
|
||||
libs-y += libarchive/
|
||||
libs-y += libarchive/
|
||||
|
||||
lib-y:=
|
||||
|
||||
|
||||
@ -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 @@ enum {
|
||||
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 @@ enum {
|
||||
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 @@ static off_t cpio_pad4(off_t size)
|
||||
* 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 @@ static NOINLINE int cpio_o(void)
|
||||
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 @@ static NOINLINE int cpio_o(void)
|
||||
} 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 @@ static NOINLINE int cpio_o(void)
|
||||
}
|
||||
|
||||
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 @@ int cpio_main(int argc UNUSED_PARAM, char **argv)
|
||||
{
|
||||
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 @@ int cpio_main(int argc UNUSED_PARAM, char **argv)
|
||||
"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 @@ int cpio_main(int argc UNUSED_PARAM, char **argv)
|
||||
/* -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);
|
||||
}
|
||||
|
||||
@ -4,7 +4,7 @@
|
||||
#
|
||||
# Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
||||
|
||||
lib-y:=
|
||||
lib-y:= common.o
|
||||
|
||||
COMMON_FILES:= \
|
||||
\
|
||||
|
||||
9
archival/libarchive/common.c
Normal file
9
archival/libarchive/common.c
Normal file
@ -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!!!";
|
||||
@ -52,6 +52,11 @@ char FAST_FUNC get_header_cpio(archive_handle_t *archive_handle)
|
||||
&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 @@ char FAST_FUNC get_header_cpio(archive_handle_t *archive_handle)
|
||||
/* 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;
|
||||
|
||||
@ -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(
|
||||
|
||||
@ -95,6 +95,7 @@ typedef struct archive_handle_t {
|
||||
#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 @@ struct BUG_tar_header {
|
||||
};
|
||||
|
||||
|
||||
extern const char cpio_TRAILER[];
|
||||
|
||||
|
||||
archive_handle_t *init_handle(void) FAST_FUNC;
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user