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rpm2cpio: handle LZMA compressed rpms. closes 10166

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function                                             old     new   delta
rpm2cpio_main                                         78     120     +42
setup_lzma_on_fd                                       -      29     +29
fork_transformer_and_free                              -      28     +28
...
setup_unzip_on_fd                                     56      32     -24
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(add/remove: 2/0 grow/shrink: 3/5 up/down: 104/-67)            Total: 37 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2017-08-10 10:35:08 +02:00
parent 3c9b8fe252
commit 0cf64c8b5d
3 changed files with 43 additions and 16 deletions
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4
include/libbb.h
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@ -863,7 +863,7 @@ unsigned bb_clk_tck(void) FAST_FUNC;
#if SEAMLESS_COMPRESSION
/* Autodetects gzip/bzip2 formats. fd may be in the middle of the file! */
extern int setup_unzip_on_fd(int fd, int fail_if_not_compressed) FAST_FUNC;
int setup_unzip_on_fd(int fd, int fail_if_not_compressed) FAST_FUNC;
/* Autodetects .gz etc */
extern int open_zipped(const char *fname, int fail_if_not_compressed) FAST_FUNC;
extern void *xmalloc_open_zipped_read_close(const char *fname, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC;
@ -872,6 +872,8 @@ extern void *xmalloc_open_zipped_read_close(const char *fname, size_t *maxsz_p)
# define open_zipped(fname, fail_if_not_compressed) open((fname), O_RDONLY);
# define xmalloc_open_zipped_read_close(fname, maxsz_p) xmalloc_open_read_close((fname), (maxsz_p))
#endif
/* lzma has no signature, need a little helper. NB: exist only for ENABLE_FEATURE_SEAMLESS_LZMA=y */
void setup_lzma_on_fd(int fd) FAST_FUNC;
extern ssize_t safe_write(int fd, const void *buf, size_t count) FAST_FUNC;
// NB: will return short write on error, not -1,