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libarchive: treat one "FIXME: avoid seek"

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function                                             old     new   delta
xmalloc_read_with_initial_buf                          -     205    +205
setup_transformer_on_fd                              154     150      -4
xmalloc_open_zipped_read_close                       143     135      -8
xmalloc_read                                         201      10    -191
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/3 up/down: 205/-203)            Total: 2 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2019-05-24 17:03:28 +02:00
parent 309f5e3775
commit dff2bd733f
4 changed files with 41 additions and 22 deletions
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6
include/bb_archive.h
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@@ -235,6 +235,12 @@ typedef struct transformer_state_t {
off_t bytes_in; /* used in unzip code only: needs to know packed size */
uint32_t crc32;
time_t mtime; /* gunzip code may set this on exit */
union { /* if we read magic, it's saved here */
uint8_t b[8];
uint16_t b16[4];
uint32_t b32[2];
} magic;
} transformer_state_t;
void init_transformer_state(transformer_state_t *xstate) FAST_FUNC;

1
include/libbb.h
View File

@@ -881,6 +881,7 @@ extern ssize_t open_read_close(const char *filename, void *buf, size_t maxsz) FA
extern char *xmalloc_reads(int fd, size_t *maxsz_p) FAST_FUNC;
/* Reads block up to *maxsz_p (default: INT_MAX - 4095) */
extern void *xmalloc_read(int fd, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC;
extern void *xmalloc_read_with_initial_buf(int fd, size_t *maxsz_p, char *buf, size_t total) FAST_FUNC;
/* Returns NULL if file can't be opened (default max size: INT_MAX - 4095) */
extern void *xmalloc_open_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC;
/* Never returns NULL */