#include "cache.h"
#include "config.h"
-static void do_nothing(size_t size)
-{
-}
-
-static void (*try_to_free_routine)(size_t size) = do_nothing;
-
static int memory_limit_check(size_t size, int gentle)
{
static size_t limit = 0;
return 0;
}
-try_to_free_t set_try_to_free_routine(try_to_free_t routine)
-{
- try_to_free_t old = try_to_free_routine;
- if (!routine)
- routine = do_nothing;
- try_to_free_routine = routine;
- return old;
-}
-
char *xstrdup(const char *str)
{
char *ret = strdup(str);
- if (!ret) {
- try_to_free_routine(strlen(str) + 1);
- ret = strdup(str);
- if (!ret)
- die("Out of memory, strdup failed");
- }
+ if (!ret)
+ die("Out of memory, strdup failed");
return ret;
}
if (!ret && !size)
ret = malloc(1);
if (!ret) {
- try_to_free_routine(size);
- ret = malloc(size);
- if (!ret && !size)
- ret = malloc(1);
- if (!ret) {
- if (!gentle)
- die("Out of memory, malloc failed (tried to allocate %lu bytes)",
- (unsigned long)size);
- else {
- error("Out of memory, malloc failed (tried to allocate %lu bytes)",
- (unsigned long)size);
- return NULL;
- }
+ if (!gentle)
+ die("Out of memory, malloc failed (tried to allocate %lu bytes)",
+ (unsigned long)size);
+ else {
+ error("Out of memory, malloc failed (tried to allocate %lu bytes)",
+ (unsigned long)size);
+ return NULL;
}
}
#ifdef XMALLOC_POISON
ret = realloc(ptr, size);
if (!ret && !size)
ret = realloc(ptr, 1);
- if (!ret) {
- try_to_free_routine(size);
- ret = realloc(ptr, size);
- if (!ret && !size)
- ret = realloc(ptr, 1);
- if (!ret)
- die("Out of memory, realloc failed");
- }
+ if (!ret)
+ die("Out of memory, realloc failed");
return ret;
}
ret = calloc(nmemb, size);
if (!ret && (!nmemb || !size))
ret = calloc(1, 1);
- if (!ret) {
- try_to_free_routine(nmemb * size);
- ret = calloc(nmemb, size);
- if (!ret && (!nmemb || !size))
- ret = calloc(1, 1);
- if (!ret)
- die("Out of memory, calloc failed");
- }
+ if (!ret)
+ die("Out of memory, calloc failed");
return ret;
}
return NULL;
}
-int xmkstemp(char *template)
+int xmkstemp(char *filename_template)
{
int fd;
char origtemplate[PATH_MAX];
- strlcpy(origtemplate, template, sizeof(origtemplate));
+ strlcpy(origtemplate, filename_template, sizeof(origtemplate));
- fd = mkstemp(template);
+ fd = mkstemp(filename_template);
if (fd < 0) {
int saved_errno = errno;
const char *nonrelative_template;
- if (strlen(template) != strlen(origtemplate))
- template = origtemplate;
+ if (strlen(filename_template) != strlen(origtemplate))
+ filename_template = origtemplate;
- nonrelative_template = absolute_path(template);
+ nonrelative_template = absolute_path(filename_template);
errno = saved_errno;
die_errno("Unable to create temporary file '%s'",
nonrelative_template);
"abcdefghijklmnopqrstuvwxyz"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"0123456789";
- static const int num_letters = 62;
+ static const int num_letters = ARRAY_SIZE(letters) - 1;
+ static const char x_pattern[] = "XXXXXX";
+ static const int num_x = ARRAY_SIZE(x_pattern) - 1;
uint64_t value;
struct timeval tv;
- char *template;
+ char *filename_template;
size_t len;
int fd, count;
len = strlen(pattern);
- if (len < 6 + suffix_len) {
+ if (len < num_x + suffix_len) {
errno = EINVAL;
return -1;
}
- if (strncmp(&pattern[len - 6 - suffix_len], "XXXXXX", 6)) {
+ if (strncmp(&pattern[len - num_x - suffix_len], x_pattern, num_x)) {
errno = EINVAL;
return -1;
}
* Try TMP_MAX different filenames.
*/
gettimeofday(&tv, NULL);
- value = ((size_t)(tv.tv_usec << 16)) ^ tv.tv_sec ^ getpid();
- template = &pattern[len - 6 - suffix_len];
+ value = ((uint64_t)tv.tv_usec << 16) ^ tv.tv_sec ^ getpid();
+ filename_template = &pattern[len - num_x - suffix_len];
for (count = 0; count < TMP_MAX; ++count) {
uint64_t v = value;
+ int i;
/* Fill in the random bits. */
- template[0] = letters[v % num_letters]; v /= num_letters;
- template[1] = letters[v % num_letters]; v /= num_letters;
- template[2] = letters[v % num_letters]; v /= num_letters;
- template[3] = letters[v % num_letters]; v /= num_letters;
- template[4] = letters[v % num_letters]; v /= num_letters;
- template[5] = letters[v % num_letters]; v /= num_letters;
+ for (i = 0; i < num_x; i++) {
+ filename_template[i] = letters[v % num_letters];
+ v /= num_letters;
+ }
fd = open(pattern, O_CREAT | O_EXCL | O_RDWR, mode);
if (fd >= 0)
return git_mkstemps_mode(pattern, 0, mode);
}
-int xmkstemp_mode(char *template, int mode)
+int xmkstemp_mode(char *filename_template, int mode)
{
int fd;
char origtemplate[PATH_MAX];
- strlcpy(origtemplate, template, sizeof(origtemplate));
+ strlcpy(origtemplate, filename_template, sizeof(origtemplate));
- fd = git_mkstemp_mode(template, mode);
+ fd = git_mkstemp_mode(filename_template, mode);
if (fd < 0) {
int saved_errno = errno;
const char *nonrelative_template;
- if (!template[0])
- template = origtemplate;
+ if (!filename_template[0])
+ filename_template = origtemplate;
- nonrelative_template = absolute_path(template);
+ nonrelative_template = absolute_path(filename_template);
errno = saved_errno;
die_errno("Unable to create temporary file '%s'",
nonrelative_template);
va_end(ap);
if (len < 0)
- die("BUG: your snprintf is broken");
+ BUG("your snprintf is broken");
if (len >= max)
- die("BUG: attempt to snprintf into too-small buffer");
+ BUG("attempt to snprintf into too-small buffer");
return len;
}
buf[len - 1] = 0;
return ret;
}
+
+int is_empty_or_missing_file(const char *filename)
+{
+ struct stat st;
+
+ if (stat(filename, &st) < 0) {
+ if (errno == ENOENT)
+ return 1;
+ die_errno(_("could not stat %s"), filename);
+ }
+
+ return !st.st_size;
+}
projects / thirdparty / git.git / blobdiff