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open_transformer: do not return fd, it does not change

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libbb: adopt zipped read from modprobe-small

function                                             old     new   delta
getoptscmd                                           708     713      +5
qgravechar                                           106     109      +3
huft_build                                          1165    1168      +3
tr_main                                              474     472      -2
open_transformer                                      91      89      -2
evalvar                                             1376    1374      -2
rpm_main                                            1691    1688      -3
qrealloc                                              36      33      -3
get_header_tar_lzma                                   55      52      -3
get_header_tar_gz                                    100      97      -3
get_header_tar_bz2                                    55      52      -3
get_header_tar_Z                                      89      86      -3
find_main                                            418     406     -12
prepare                                              302     283     -19
xmalloc_open_zipped_read_close                       161     135     -26
xmalloc_read                                         248     199     -49
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/13 up/down: 11/-130)         Total: -119 bytes
This commit is contained in:
Denis Vlasenko
2008-07-10 17:43:01 +00:00
parent 0e2c93fc0b
commit b6052724ff
11 changed files with 70 additions and 66 deletions
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9
include/libbb.h
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@ -583,15 +583,18 @@ extern unsigned char xread_char(int fd) FAST_FUNC;
// Reads one line a-la fgets (but doesn't save terminating '\n').
// Uses single full_read() call, works only on seekable streams.
extern char *reads(int fd, char *buf, size_t count) FAST_FUNC;
extern ssize_t read_close(int fd, void *buf, size_t maxsz) FAST_FUNC;
extern ssize_t open_read_close(const char *filename, void *buf, size_t maxsz) FAST_FUNC;
// Reads one line a-la fgets (but doesn't save terminating '\n').
// Reads byte-by-byte. Useful when it is important to not read ahead.
// Bytes are appended to pfx (which must be malloced, or NULL).
extern char *xmalloc_reads(int fd, char *pfx, size_t *maxsz_p) FAST_FUNC;
extern ssize_t read_close(int fd, void *buf, size_t maxsz) FAST_FUNC;
extern ssize_t open_read_close(const char *filename, void *buf, size_t maxsz) FAST_FUNC;
extern void *xmalloc_read(int fd, size_t *sizep) FAST_FUNC;
/* Reads block up to *maxsz_p (default: MAX_INT(ssize_t)) */
extern void *xmalloc_read(int fd, size_t *maxsz_p) FAST_FUNC;
/* Returns NULL if file can't be opened */
extern void *xmalloc_open_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC;
/* Autodetects .gz etc */
extern void *xmalloc_open_zipped_read_close(const char *fname, size_t *maxsz_p) FAST_FUNC;
/* Never returns NULL */
extern void *xmalloc_xopen_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC;