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gzip: fix gzip with many files corrupting some files after first

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2009-05-18 13:08:57 +02:00
parent 16bda3bd1f
commit 167cd709df
1 changed files with 32 additions and 38 deletions
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70
archival/gzip.c
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@ -267,7 +267,7 @@ struct globals {
#define DECLARE(type, array, size) \
type * array
#define ALLOC(type, array, size) \
array = xzalloc((size_t)(((size)+1L)/2) * 2*sizeof(type));
array = xzalloc((size_t)(((size)+1L)/2) * 2*sizeof(type))
#define FREE(array) \
do { free(array); array = NULL; } while (0)
@ -388,19 +388,6 @@ static void put_32bit(ulg n)
put_16bit(n >> 16);
}
/* ===========================================================================
* Clear input and output buffers
*/
static void clear_bufs(void)
{
G1.outcnt = 0;
#ifdef DEBUG
G1.insize = 0;
#endif
G1.isize = 0;
}
/* ===========================================================================
* Run a set of bytes through the crc shift register. If s is a NULL
* pointer, then initialize the crc shift register contents instead.
@ -2019,7 +2006,37 @@ IF_DESKTOP(long long) int pack_gzip(unpack_info_t *info UNUSED_PARAM)
{
struct stat s;
clear_bufs();
/* Clear input and output buffers */
G1.outcnt = 0;
#ifdef DEBUG
G1.insize = 0;
#endif
G1.isize = 0;
/* Reinit G2.xxx */
memset(&G2, 0, sizeof(G2));
G2.l_desc.dyn_tree = G2.dyn_ltree;
G2.l_desc.static_tree = G2.static_ltree;
G2.l_desc.extra_bits = extra_lbits;
G2.l_desc.extra_base = LITERALS + 1;
G2.l_desc.elems = L_CODES;
G2.l_desc.max_length = MAX_BITS;
//G2.l_desc.max_code = 0;
G2.d_desc.dyn_tree = G2.dyn_dtree;
G2.d_desc.static_tree = G2.static_dtree;
G2.d_desc.extra_bits = extra_dbits;
//G2.d_desc.extra_base = 0;
G2.d_desc.elems = D_CODES;
G2.d_desc.max_length = MAX_BITS;
//G2.d_desc.max_code = 0;
G2.bl_desc.dyn_tree = G2.bl_tree;
//G2.bl_desc.static_tree = NULL;
G2.bl_desc.extra_bits = extra_blbits,
//G2.bl_desc.extra_base = 0;
G2.bl_desc.elems = BL_CODES;
G2.bl_desc.max_length = MAX_BL_BITS;
//G2.bl_desc.max_code = 0;
s.st_ctime = 0;
fstat(STDIN_FILENO, &s);
zip(s.st_ctime);
@ -2064,29 +2081,6 @@ int gzip_main(int argc UNUSED_PARAM, char **argv)
SET_PTR_TO_GLOBALS(xzalloc(sizeof(struct globals) + sizeof(struct globals2))
+ sizeof(struct globals));
barrier();
G2.l_desc.dyn_tree = G2.dyn_ltree;
G2.l_desc.static_tree = G2.static_ltree;
G2.l_desc.extra_bits = extra_lbits;
G2.l_desc.extra_base = LITERALS + 1;
G2.l_desc.elems = L_CODES;
G2.l_desc.max_length = MAX_BITS;
//G2.l_desc.max_code = 0;
G2.d_desc.dyn_tree = G2.dyn_dtree;
G2.d_desc.static_tree = G2.static_dtree;
G2.d_desc.extra_bits = extra_dbits;
//G2.d_desc.extra_base = 0;
G2.d_desc.elems = D_CODES;
G2.d_desc.max_length = MAX_BITS;
//G2.d_desc.max_code = 0;
G2.bl_desc.dyn_tree = G2.bl_tree;
//G2.bl_desc.static_tree = NULL;
G2.bl_desc.extra_bits = extra_blbits,
//G2.bl_desc.extra_base = 0;
G2.bl_desc.elems = BL_CODES;
G2.bl_desc.max_length = MAX_BL_BITS;
//G2.bl_desc.max_code = 0;
/* Allocate all global buffers (for DYN_ALLOC option) */
ALLOC(uch, G1.l_buf, INBUFSIZ);