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1a9e9bdd9

Denis Vlasenko
Denis Vlasenko
2008-11-01
FAILED Duration: 36s

Subject

gunzip: restore mtime. approx +80 bytes of code rpm: make code more robust lsmod: small code shrink

Binary

No binary (build failed)

Architecture & Compiler Flags

Architecture: x86_64-linux-gnu Compiler: gcc (Ubuntu 11.4.0-1ubuntu1~22.04.3) 11.4.0

—

Build Log

(log yok)

Commit Diff GitHub →

archival/bbunzip.c +24 -8archival/bzip2.c +2 -1archival/gzip.c +2 -1archival/libunarchive/decompress_unzip.c +19 -7archival/rpm.c +9 -6include/libbb.h +1 -4include/unarchive.h +11 -0modutils/lsmod.c +1 -1
archival/bbunzip.c+24 -8
@@ -30,13 +30,14 @@ int open_to_or_warn(int to_fd, const char *filename, int flags, int mode)
int FAST_FUNC bbunpack(char **argv,
char* (*make_new_name)(char *filename),
- USE_DESKTOP(long long) int (*unpacker)(void)
+ USE_DESKTOP(long long) int (*unpacker)(unpack_info_t *info)
)
{
struct stat stat_buf;
USE_DESKTOP(long long) int status;
char *filename, *new_name;
smallint exitcode = 0;
+ unpack_info_t info;
do {
/* NB: new_name is *maybe* malloc'ed! */
@@ -92,14 +93,29 @@ int FAST_FUNC bbunpack(char **argv,
"use -f to force it");
}
- status = unpacker();
+ /* memset(&info, 0, sizeof(info)); */
+ info.mtime = 0; /* so far it has one member only */
+ status = unpacker(&info);
if (status < 0)
exitcode = 1;
if (filename) {
char *del = new_name;
if (status >= 0) {
- /* TODO: restore user/group/times here? */
+ /* TODO: restore other things? */
+ if (info.mtime) {
+ struct utimbuf times;
+
+ times.actime = info.mtime;
+ times.modtime = info.mtime;
+ /* Close first.
+ * On some systems calling utime
+ * then closing resets the mtime. */
+ close(STDOUT_FILENO);
+ /* Ignoring errors */
+ utime(new_name, &times);
+ }
+
/* Delete _compressed_ file */
del = filename;
/* restore extension (unless tgz -> tar case) */
@@ -159,7 +175,7 @@ char* make_new_name_bunzip2(char *filename)
}
static
-USE_DESKTOP(long long) int unpack_bunzip2(void)
+USE_DESKTOP(long long) int unpack_bunzip2(unpack_info_t *info UNUSED_PARAM)
{
return unpack_bz2_stream_prime(STDIN_FILENO, STDOUT_FILENO);
}
@@ -235,7 +251,7 @@ char* make_new_name_gunzip(char *filename)
}
static
-USE_DESKTOP(long long) int unpack_gunzip(void)
+USE_DESKTOP(long long) int unpack_gunzip(unpack_info_t *info)
{
USE_DESKTOP(long long) int status = -1;
@@ -247,7 +263,7 @@ USE_DESKTOP(long long) int unpack_gunzip(void)
if (ENABLE_FEATURE_SEAMLESS_Z && magic2 == 0x9d) {
status = unpack_Z_stream(STDIN_FILENO, STDOUT_FILENO);
} else if (magic2 == 0x8b) {
- status = unpack_gz_stream(STDIN_FILENO, STDOUT_FILENO);
+ status = unpack_gz_stream_with_info(STDIN_FILENO, STDOUT_FILENO, info);
} else {
goto bad_magic;
}
@@ -309,7 +325,7 @@ char* make_new_name_unlzma(char *filename)
}
static
-USE_DESKTOP(long long) int unpack_unlzma(void)
+USE_DESKTOP(long long) int unpack_unlzma(unpack_info_t *info UNUSED_PARAM)
{
return unpack_lzma_stream(STDIN_FILENO, STDOUT_FILENO);
}
@@ -344,7 +360,7 @@ char* make_new_name_uncompress(char *filename)
}
static
-USE_DESKTOP(long long) int unpack_uncompress(void)
+USE_DESKTOP(long long) int unpack_uncompress(unpack_info_t *info UNUSED_PARAM)
{
USE_DESKTOP(long long) int status = -1;
archival/bzip2.c+2 -1
@@ -8,6 +8,7 @@
*/
#include "libbb.h"
+#include "unarchive.h"
#define CONFIG_BZIP2_FEATURE_SPEED 1
@@ -101,7 +102,7 @@ USE_DESKTOP(long long) int bz_write(bz_stream *strm, void* rbuf, ssize_t rlen, v
}
static
-USE_DESKTOP(long long) int compressStream(void)
+USE_DESKTOP(long long) int compressStream(unpack_info_t *info UNUSED_PARAM)
{
USE_DESKTOP(long long) int total;
ssize_t count;
archival/gzip.c+2 -1
@@ -40,6 +40,7 @@ aa: 85.1% -- replaced with aa.gz
*/
#include "libbb.h"
+#include "unarchive.h"
/* ===========================================================================
@@ -2014,7 +2015,7 @@ char* make_new_name_gzip(char *filename)
}
static
-USE_DESKTOP(long long) int pack_gzip(void)
+USE_DESKTOP(long long) int pack_gzip(unpack_info_t *info UNUSED_PARAM)
{
struct stat s;
archival/libunarchive/decompress_unzip.c+19 -7
@@ -1108,18 +1108,21 @@ static uint32_t buffer_read_le_u32(STATE_PARAM_ONLY)
return res;
}
-static int check_header_gzip(STATE_PARAM_ONLY)
+static int check_header_gzip(STATE_PARAM unpack_info_t *info)
{
union {
unsigned char raw[8];
struct {
uint8_t gz_method;
uint8_t flags;
- //uint32_t mtime; - unused fields
- //uint8_t xtra_flags;
- //uint8_t os_flags;
- } formatted; /* packed */
+ uint32_t mtime;
+ uint8_t xtra_flags_UNUSED;
+ uint8_t os_flags_UNUSED;
+ } __attribute__((packed)) formatted;
} header;
+ struct BUG_header {
+ char BUG_header[sizeof(header) == 8 ? 1 : -1];
+ };
/*
* Rewind bytebuffer. We use the beginning because the header has 8
@@ -1167,6 +1170,9 @@ static int check_header_gzip(STATE_PARAM_ONLY)
}
}
+ if (info)
+ info->mtime = SWAP_LE32(header.formatted.mtime);
+
/* Read the header checksum */
if (header.formatted.flags & 0x02) {
if (!top_up(PASS_STATE 2))
@@ -1177,7 +1183,7 @@ static int check_header_gzip(STATE_PARAM_ONLY)
}
USE_DESKTOP(long long) int FAST_FUNC
-unpack_gz_stream(int in, int out)
+unpack_gz_stream_with_info(int in, int out, unpack_info_t *info)
{
uint32_t v32;
USE_DESKTOP(long long) int n;
@@ -1192,7 +1198,7 @@ unpack_gz_stream(int in, int out)
gunzip_src_fd = in;
again:
- if (!check_header_gzip(PASS_STATE_ONLY)) {
+ if (!check_header_gzip(PASS_STATE info)) {
bb_error_msg("corrupted data");
n = -1;
goto ret;
@@ -1239,3 +1245,9 @@ unpack_gz_stream(int in, int out)
DEALLOC_STATE;
return n;
}
+
+USE_DESKTOP(long long) int FAST_FUNC
+unpack_gz_stream(int in, int out)
+{
+ return unpack_gz_stream_with_info(in, out, NULL);
+}
archival/rpm.c+9 -6
@@ -115,8 +115,8 @@ int rpm_main(int argc, char **argv)
}
}
argv += optind;
- argc -= optind;
- if (!argc) bb_show_usage();
+ //argc -= optind;
+ if (!argv[0]) bb_show_usage();
while (*argv) {
rpm_fd = xopen(*argv++, O_RDONLY);
@@ -251,7 +251,7 @@ static void extract_cpio_gz(int fd)
static rpm_index **rpm_gettags(int fd, int *num_tags)
{
/* We should never need mode than 200, and realloc later */
- rpm_index **tags = xzalloc(200 * sizeof(struct rpmtag *));
+ rpm_index **tags = xzalloc(200 * sizeof(tags[0]));
int pass, tagindex = 0;
xlseek(fd, 96, SEEK_CUR); /* Seek past the unused lead */
@@ -265,6 +265,9 @@ static rpm_index **rpm_gettags(int fd, int *num_tags)
uint32_t entries; /* Number of entries in header (4 bytes) */
uint32_t size; /* Size of store (4 bytes) */
} header;
+ struct BUG_header {
+ char BUG_header[sizeof(header) == 16 ? 1 : -1];
+ };
rpm_index *tmpindex;
int storepos;
@@ -278,8 +281,8 @@ static rpm_index **rpm_gettags(int fd, int *num_tags)
storepos = xlseek(fd,0,SEEK_CUR) + header.entries * 16;
while (header.entries--) {
- tmpindex = tags[tagindex++] = xmalloc(sizeof(rpm_index));
- xread(fd, tmpindex, sizeof(rpm_index));
+ tmpindex = tags[tagindex++] = xmalloc(sizeof(*tmpindex));
+ xread(fd, tmpindex, sizeof(*tmpindex));
tmpindex->tag = ntohl(tmpindex->tag);
tmpindex->type = ntohl(tmpindex->type);
tmpindex->count = ntohl(tmpindex->count);
@@ -292,7 +295,7 @@ static rpm_index **rpm_gettags(int fd, int *num_tags)
if (pass == 0)
xlseek(fd, (8 - (xlseek(fd,0,SEEK_CUR) % 8)) % 8, SEEK_CUR);
}
- tags = xrealloc(tags, tagindex * sizeof(struct rpmtag *)); /* realloc tags to save space */
+ tags = xrealloc(tags, tagindex * sizeof(tags[0])); /* realloc tags to save space */
*num_tags = tagindex;
return tags; /* All done, leave the file at the start of the gzipped cpio archive */
}
include/libbb.h+1 -4
@@ -912,10 +912,7 @@ int chown_main(int argc, char **argv) USE_CHOWN(MAIN_EXTERNALLY_VISIBLE);
/* Don't need USE_xxx() guard for these */
int gunzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int bunzip2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int bbunpack(char **argv,
- char* (*make_new_name)(char *filename),
- USE_DESKTOP(long long) int (*unpacker)(void)
-) FAST_FUNC;
+
#if ENABLE_ROUTE
void bb_displayroutes(int noresolve, int netstatfmt) FAST_FUNC;
#endif
include/unarchive.h+11 -0
@@ -77,6 +77,12 @@ typedef struct archive_handle_t {
} archive_handle_t;
+/* Info struct unpackers can fill out to inform users of thing like
+ * timestamps of unpacked files */
+typedef struct unpack_info_t {
+ time_t mtime;
+} unpack_info_t;
+
extern archive_handle_t *init_handle(void) FAST_FUNC;
extern char filter_accept_all(archive_handle_t *archive_handle) FAST_FUNC;
@@ -126,10 +132,15 @@ USE_DESKTOP(long long) int unpack_lzma_stream(int src_fd, int dst_fd) FAST_FUNC;
/* the rest wants 2 first bytes already skipped by the caller */
USE_DESKTOP(long long) int unpack_bz2_stream(int src_fd, int dst_fd) FAST_FUNC;
USE_DESKTOP(long long) int unpack_gz_stream(int src_fd, int dst_fd) FAST_FUNC;
+USE_DESKTOP(long long) int unpack_gz_stream_with_info(int src_fd, int dst_fd, unpack_info_t *info) FAST_FUNC;
USE_DESKTOP(long long) int unpack_Z_stream(int fd_in, int fd_out) FAST_FUNC;
/* wrapper which checks first two bytes to be "BZ" */
USE_DESKTOP(long long) int unpack_bz2_stream_prime(int src_fd, int dst_fd) FAST_FUNC;
+int bbunpack(char **argv,
+ char* (*make_new_name)(char *filename),
+ USE_DESKTOP(long long) int (*unpacker)(unpack_info_t *info)) FAST_FUNC;
+
#if BB_MMU
void open_transformer(int fd,
USE_DESKTOP(long long) int FAST_FUNC (*transformer)(int src_fd, int dst_fd)) FAST_FUNC;
modutils/lsmod.c+1 -1
@@ -46,7 +46,7 @@ int lsmod_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
#if ENABLE_FEATURE_LSMOD_PRETTY_2_6_OUTPUT
char *token[4];
parser_t *parser = config_open("/proc/modules");
- printf("Module Size Used by"); //vda!
+ printf("%-24sSize Used by", "Module");
check_tainted();
if (ENABLE_FEATURE_2_4_MODULES