Merge pull request #4255 from pks-t/pks/buffer-grow-errors
Buffer growing cleanups
diff --git a/src/buffer.c b/src/buffer.c
index fdb732d..6dfcbfb 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -18,18 +18,19 @@
char git_buf__oom[1];
#define ENSURE_SIZE(b, d) \
- if ((d) > buf->asize && git_buf_grow(b, (d)) < 0)\
+ if ((d) > (b)->asize && git_buf_grow((b), (d)) < 0)\
return -1;
-void git_buf_init(git_buf *buf, size_t initial_size)
+int git_buf_init(git_buf *buf, size_t initial_size)
{
buf->asize = 0;
buf->size = 0;
buf->ptr = git_buf__initbuf;
- if (initial_size)
- git_buf_grow(buf, initial_size);
+ ENSURE_SIZE(buf, initial_size);
+
+ return 0;
}
int git_buf_try_grow(
@@ -577,7 +578,7 @@
return data;
}
-void git_buf_attach(git_buf *buf, char *ptr, size_t asize)
+int git_buf_attach(git_buf *buf, char *ptr, size_t asize)
{
git_buf_free(buf);
@@ -588,9 +589,10 @@
buf->asize = (asize < buf->size) ? buf->size + 1 : asize;
else /* pass 0 to fall back on strlen + 1 */
buf->asize = buf->size + 1;
- } else {
- git_buf_grow(buf, asize);
}
+
+ ENSURE_SIZE(buf, asize);
+ return 0;
}
void git_buf_attach_notowned(git_buf *buf, const char *ptr, size_t size)
@@ -724,9 +726,7 @@
GITERR_CHECK_ALLOC_ADD(&alloc_len, strlen_a, strlen_b);
GITERR_CHECK_ALLOC_ADD(&alloc_len, alloc_len, need_sep);
GITERR_CHECK_ALLOC_ADD(&alloc_len, alloc_len, 1);
- if (git_buf_grow(buf, alloc_len) < 0)
- return -1;
- assert(buf->ptr);
+ ENSURE_SIZE(buf, alloc_len);
/* fix up internal pointers */
if (offset_a >= 0)
@@ -780,8 +780,7 @@
GITERR_CHECK_ALLOC_ADD(&len_total, len_total, sep_b);
GITERR_CHECK_ALLOC_ADD(&len_total, len_total, len_c);
GITERR_CHECK_ALLOC_ADD(&len_total, len_total, 1);
- if (git_buf_grow(buf, len_total) < 0)
- return -1;
+ ENSURE_SIZE(buf, len_total);
tgt = buf->ptr;
diff --git a/src/buffer.h b/src/buffer.h
index a76b2d7..b0aece4 100644
--- a/src/buffer.h
+++ b/src/buffer.h
@@ -34,7 +34,7 @@
* For the cases where GIT_BUF_INIT cannot be used to do static
* initialization.
*/
-extern void git_buf_init(git_buf *buf, size_t initial_size);
+extern int git_buf_init(git_buf *buf, size_t initial_size);
/**
* Resize the buffer allocation to make more space.
@@ -73,7 +73,7 @@
extern void git_buf_swap(git_buf *buf_a, git_buf *buf_b);
extern char *git_buf_detach(git_buf *buf);
-extern void git_buf_attach(git_buf *buf, char *ptr, size_t asize);
+extern int git_buf_attach(git_buf *buf, char *ptr, size_t asize);
/* Populates a `git_buf` where the contents are not "owned" by the
* buffer, and calls to `git_buf_free` will not free the given buf.
diff --git a/src/config_file.c b/src/config_file.c
index 2302d33..e15d57b 100644
--- a/src/config_file.c
+++ b/src/config_file.c
@@ -1267,7 +1267,7 @@
/* Escape the values to write them to the file */
static char *escape_value(const char *ptr)
{
- git_buf buf = GIT_BUF_INIT;
+ git_buf buf;
size_t len;
const char *esc;
@@ -1277,7 +1277,8 @@
if (!len)
return git__calloc(1, sizeof(char));
- git_buf_grow(&buf, len);
+ if (git_buf_init(&buf, len) < 0)
+ return NULL;
while (*ptr != '\0') {
if ((esc = strchr(escaped, *ptr)) != NULL) {
diff --git a/src/pack.c b/src/pack.c
index 60b757e..f8d0dc9 100644
--- a/src/pack.c
+++ b/src/pack.c
@@ -312,7 +312,7 @@
{
int error = 0;
size_t name_len;
- git_buf idx_name = GIT_BUF_INIT;
+ git_buf idx_name;
if (p->index_version > -1)
return 0;
@@ -320,11 +320,13 @@
name_len = strlen(p->pack_name);
assert(name_len > strlen(".pack")); /* checked by git_pack_file alloc */
- git_buf_grow(&idx_name, name_len);
+ if (git_buf_init(&idx_name, name_len) < 0)
+ return -1;
+
git_buf_put(&idx_name, p->pack_name, name_len - strlen(".pack"));
git_buf_puts(&idx_name, ".idx");
if (git_buf_oom(&idx_name)) {
- giterr_set_oom();
+ git_buf_free(&idx_name);
return -1;
}
diff --git a/src/transports/winhttp.c b/src/transports/winhttp.c
index e8e8480..fb504c9 100644
--- a/src/transports/winhttp.c
+++ b/src/transports/winhttp.c
@@ -429,7 +429,6 @@
git_buf_printf(&processed_url, ":%s", t->proxy_connection_data.port);
if (git_buf_oom(&processed_url)) {
- giterr_set_oom();
error = -1;
goto on_error;
}
