/* gzlib.c -- zlib functions common to reading and writing gzip files
- * Copyright (C) 2004, 2010, 2011, 2012 Mark Adler
+ * Copyright (C) 2004, 2010, 2011, 2012, 2013 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
#include "gzguts.h"
-#if defined(_WIN32) && !defined(__BORLANDC__)
+#if defined(_WIN32) && !defined(__BORLANDC__) && !defined(__MINGW32__)
# define LSEEK _lseeki64
#else
#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0
const char *mode;
{
gz_statep state;
- size_t len;
+ z_size_t len;
int oflag;
#ifdef O_CLOEXEC
int cloexec = 0;
return NULL;
/* allocate gzFile structure to return */
- state = malloc(sizeof(gz_state));
+ state = (gz_statep)malloc(sizeof(gz_state));
if (state == NULL)
return NULL;
state->size = 0; /* no buffers allocated yet */
}
/* save the path name for error messages */
-#ifdef _WIN32
+#ifdef WIDECHAR
if (fd == -2) {
len = wcstombs(NULL, path, 0);
- if (len == (size_t)-1)
+ if (len == (z_size_t)-1)
len = 0;
}
else
#endif
- len = strlen(path);
- state->path = malloc(len + 1);
+ len = strlen((const char *)path);
+ state->path = (char *)malloc(len + 1);
if (state->path == NULL) {
free(state);
return NULL;
}
-#ifdef _WIN32
+#ifdef WIDECHAR
if (fd == -2)
if (len)
wcstombs(state->path, path, len + 1);
/* open the file with the appropriate flags (or just use fd) */
state->fd = fd > -1 ? fd : (
-#ifdef _WIN32
+#ifdef WIDECHAR
fd == -2 ? _wopen(path, oflag, 0666) :
#endif
- open(path, oflag, 0666));
+ open((const char *)path, oflag, 0666));
if (state->fd == -1) {
free(state->path);
free(state);
return NULL;
}
- if (state->mode == GZ_APPEND)
+ if (state->mode == GZ_APPEND) {
+ LSEEK(state->fd, 0, SEEK_END); /* so gzoffset() is correct */
state->mode = GZ_WRITE; /* simplify later checks */
+ }
/* save the current position for rewinding (only if reading) */
if (state->mode == GZ_READ) {
char *path; /* identifier for error messages */
gzFile gz;
- if (fd == -1 || (path = malloc(7 + 3 * sizeof(int))) == NULL)
+ if (fd == -1 || (path = (char *)malloc(7 + 3 * sizeof(int))) == NULL)
return NULL;
#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
snprintf(path, 7 + 3 * sizeof(int), "<fd:%d>", fd); /* for debugging */
}
/* -- see zlib.h -- */
-#ifdef _WIN32
+#ifdef WIDECHAR
gzFile ZEXPORT gzopen_w(path, mode)
const wchar_t *path;
const char *mode;
return -1;
/* check and set requested size */
+ if ((size << 1) < size)
+ return -1; /* need to be able to double it */
if (size < 2)
size = 2; /* need two bytes to check magic header */
state->want = size;
return;
/* construct error message with path */
- if ((state->msg = malloc(strlen(state->path) + strlen(msg) + 3)) == NULL) {
+ if ((state->msg = (char *)malloc(strlen(state->path) + strlen(msg) + 3)) ==
+ NULL) {
state->err = Z_MEM_ERROR;
return;
}
strcat(state->msg, ": ");
strcat(state->msg, msg);
#endif
- return;
}
#ifndef INT_MAX