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Diffstat (limited to 'sha1_file.c')
-rw-r--r--sha1_file.c133
1 files changed, 75 insertions, 58 deletions
diff --git a/sha1_file.c b/sha1_file.c
index ac6b5e00b6..7faa8bcd50 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -349,6 +349,7 @@ static void link_alt_odb_entries(const char *alt, const char *ep, int sep,
static void read_info_alternates(const char * relative_base, int depth)
{
char *map;
+ size_t mapsz;
struct stat st;
char path[PATH_MAX];
int fd;
@@ -361,12 +362,13 @@ static void read_info_alternates(const char * relative_base, int depth)
close(fd);
return;
}
- map = xmmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
+ mapsz = xsize_t(st.st_size);
+ map = xmmap(NULL, mapsz, PROT_READ, MAP_PRIVATE, fd, 0);
close(fd);
- link_alt_odb_entries(map, map + st.st_size, '\n', relative_base, depth);
+ link_alt_odb_entries(map, map + mapsz, '\n', relative_base, depth);
- munmap(map, st.st_size);
+ munmap(map, mapsz);
}
void prepare_alt_odb(void)
@@ -430,13 +432,14 @@ void pack_report()
pack_mapped, peak_pack_mapped);
}
-static int check_packed_git_idx(const char *path, unsigned long *idx_size_,
- void **idx_map_)
+static int check_packed_git_idx(const char *path,
+ unsigned long *idx_size_,
+ void **idx_map_)
{
void *idx_map;
uint32_t *index;
- unsigned long idx_size;
- int nr, i;
+ size_t idx_size;
+ uint32_t nr, i;
int fd = open(path, O_RDONLY);
struct stat st;
if (fd < 0)
@@ -445,7 +448,11 @@ static int check_packed_git_idx(const char *path, unsigned long *idx_size_,
close(fd);
return -1;
}
- idx_size = st.st_size;
+ idx_size = xsize_t(st.st_size);
+ if (idx_size < 4 * 256 + 20 + 20) {
+ close(fd);
+ return error("index file %s is too small", path);
+ }
idx_map = xmmap(NULL, idx_size, PROT_READ, MAP_PRIVATE, fd, 0);
close(fd);
@@ -453,25 +460,25 @@ static int check_packed_git_idx(const char *path, unsigned long *idx_size_,
*idx_map_ = idx_map;
*idx_size_ = idx_size;
- /* check index map */
- if (idx_size < 4*256 + 20 + 20)
- return error("index file %s is too small", path);
-
/* a future index format would start with this, as older git
* binaries would fail the non-monotonic index check below.
* give a nicer warning to the user if we can.
*/
- if (index[0] == htonl(PACK_IDX_SIGNATURE))
+ if (index[0] == htonl(PACK_IDX_SIGNATURE)) {
+ munmap(idx_map, idx_size);
return error("index file %s is a newer version"
" and is not supported by this binary"
" (try upgrading GIT to a newer version)",
path);
+ }
nr = 0;
for (i = 0; i < 256; i++) {
- unsigned int n = ntohl(index[i]);
- if (n < nr)
+ uint32_t n = ntohl(index[i]);
+ if (n < nr) {
+ munmap(idx_map, idx_size);
return error("non-monotonic index %s", path);
+ }
nr = n;
}
@@ -482,8 +489,10 @@ static int check_packed_git_idx(const char *path, unsigned long *idx_size_,
* - 20-byte SHA1 of the packfile
* - 20-byte SHA1 file checksum
*/
- if (idx_size != 4*256 + nr * 24 + 20 + 20)
+ if (idx_size != 4*256 + nr * 24 + 20 + 20) {
+ munmap(idx_map, idx_size);
return error("wrong index file size in %s", path);
+ }
return 0;
}
@@ -622,7 +631,7 @@ static int open_packed_git(struct packed_git *p)
return -1;
}
-static int in_window(struct pack_window *win, unsigned long offset)
+static int in_window(struct pack_window *win, off_t offset)
{
/* We must promise at least 20 bytes (one hash) after the
* offset is available from this window, otherwise the offset
@@ -637,7 +646,7 @@ static int in_window(struct pack_window *win, unsigned long offset)
unsigned char* use_pack(struct packed_git *p,
struct pack_window **w_cursor,
- unsigned long offset,
+ off_t offset,
unsigned int *left)
{
struct pack_window *win = *w_cursor;
@@ -662,11 +671,13 @@ unsigned char* use_pack(struct packed_git *p,
}
if (!win) {
size_t window_align = packed_git_window_size / 2;
+ off_t len;
win = xcalloc(1, sizeof(*win));
win->offset = (offset / window_align) * window_align;
- win->len = p->pack_size - win->offset;
- if (win->len > packed_git_window_size)
- win->len = packed_git_window_size;
+ len = p->pack_size - win->offset;
+ if (len > packed_git_window_size)
+ len = packed_git_window_size;
+ win->len = (size_t)len;
pack_mapped += win->len;
while (packed_git_limit < pack_mapped
&& unuse_one_window(p))
@@ -695,7 +706,7 @@ unsigned char* use_pack(struct packed_git *p,
}
offset -= win->offset;
if (left)
- *left = win->len - offset;
+ *left = win->len - xsize_t(offset);
return win->base + offset;
}
@@ -871,9 +882,9 @@ void *map_sha1_file(const unsigned char *sha1, unsigned long *size)
*/
sha1_file_open_flag = 0;
}
- map = xmmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
+ *size = xsize_t(st.st_size);
+ map = xmmap(NULL, *size, PROT_READ, MAP_PRIVATE, fd, 0);
close(fd);
- *size = st.st_size;
return map;
}
@@ -1053,14 +1064,14 @@ static void *unpack_sha1_file(void *map, unsigned long mapsize, enum object_type
return unpack_sha1_rest(&stream, hdr, *size, sha1);
}
-static unsigned long get_delta_base(struct packed_git *p,
+static off_t get_delta_base(struct packed_git *p,
struct pack_window **w_curs,
- unsigned long *curpos,
+ off_t *curpos,
enum object_type type,
- unsigned long delta_obj_offset)
+ off_t delta_obj_offset)
{
unsigned char *base_info = use_pack(p, w_curs, *curpos, NULL);
- unsigned long base_offset;
+ off_t base_offset;
/* use_pack() assured us we have [base_info, base_info + 20)
* as a range that we can look at without walking off the
@@ -1096,17 +1107,17 @@ static unsigned long get_delta_base(struct packed_git *p,
}
/* forward declaration for a mutually recursive function */
-static int packed_object_info(struct packed_git *p, unsigned long offset,
+static int packed_object_info(struct packed_git *p, off_t offset,
unsigned long *sizep);
static int packed_delta_info(struct packed_git *p,
struct pack_window **w_curs,
- unsigned long curpos,
+ off_t curpos,
enum object_type type,
- unsigned long obj_offset,
+ off_t obj_offset,
unsigned long *sizep)
{
- unsigned long base_offset;
+ off_t base_offset;
base_offset = get_delta_base(p, w_curs, &curpos, type, obj_offset);
type = packed_object_info(p, base_offset, NULL);
@@ -1156,7 +1167,7 @@ static int packed_delta_info(struct packed_git *p,
static int unpack_object_header(struct packed_git *p,
struct pack_window **w_curs,
- unsigned long *curpos,
+ off_t *curpos,
unsigned long *sizep)
{
unsigned char *base;
@@ -1180,14 +1191,15 @@ static int unpack_object_header(struct packed_git *p,
}
const char *packed_object_info_detail(struct packed_git *p,
- unsigned long obj_offset,
+ off_t obj_offset,
unsigned long *size,
unsigned long *store_size,
unsigned int *delta_chain_length,
unsigned char *base_sha1)
{
struct pack_window *w_curs = NULL;
- unsigned long curpos, dummy;
+ off_t curpos;
+ unsigned long dummy;
unsigned char *next_sha1;
enum object_type type;
@@ -1211,6 +1223,7 @@ const char *packed_object_info_detail(struct packed_git *p,
obj_offset = get_delta_base(p, &w_curs, &curpos, type, obj_offset);
if (*delta_chain_length == 0) {
/* TODO: find base_sha1 as pointed by curpos */
+ hashclr(base_sha1);
}
break;
case OBJ_REF_DELTA:
@@ -1226,11 +1239,12 @@ const char *packed_object_info_detail(struct packed_git *p,
}
}
-static int packed_object_info(struct packed_git *p, unsigned long obj_offset,
+static int packed_object_info(struct packed_git *p, off_t obj_offset,
unsigned long *sizep)
{
struct pack_window *w_curs = NULL;
- unsigned long size, curpos = obj_offset;
+ unsigned long size;
+ off_t curpos = obj_offset;
enum object_type type;
type = unpack_object_header(p, &w_curs, &curpos, &size);
@@ -1258,7 +1272,7 @@ static int packed_object_info(struct packed_git *p, unsigned long obj_offset,
static void *unpack_compressed_entry(struct packed_git *p,
struct pack_window **w_curs,
- unsigned long curpos,
+ off_t curpos,
unsigned long size)
{
int st;
@@ -1289,20 +1303,22 @@ static void *unpack_compressed_entry(struct packed_git *p,
static void *unpack_delta_entry(struct packed_git *p,
struct pack_window **w_curs,
- unsigned long curpos,
+ off_t curpos,
unsigned long delta_size,
- unsigned long obj_offset,
+ off_t obj_offset,
enum object_type *type,
unsigned long *sizep)
{
void *delta_data, *result, *base;
- unsigned long base_size, base_offset;
+ unsigned long base_size;
+ off_t base_offset;
base_offset = get_delta_base(p, w_curs, &curpos, *type, obj_offset);
base = unpack_entry(p, base_offset, type, &base_size);
if (!base)
- die("failed to read delta base object at %lu from %s",
- base_offset, p->pack_name);
+ die("failed to read delta base object"
+ " at %"PRIuMAX" from %s",
+ (uintmax_t)base_offset, p->pack_name);
delta_data = unpack_compressed_entry(p, w_curs, curpos, delta_size);
result = patch_delta(base, base_size,
@@ -1315,11 +1331,11 @@ static void *unpack_delta_entry(struct packed_git *p,
return result;
}
-void *unpack_entry(struct packed_git *p, unsigned long obj_offset,
+void *unpack_entry(struct packed_git *p, off_t obj_offset,
enum object_type *type, unsigned long *sizep)
{
struct pack_window *w_curs = NULL;
- unsigned long curpos = obj_offset;
+ off_t curpos = obj_offset;
void *data;
*type = unpack_object_header(p, &w_curs, &curpos, sizep);
@@ -1342,23 +1358,23 @@ void *unpack_entry(struct packed_git *p, unsigned long obj_offset,
return data;
}
-int num_packed_objects(const struct packed_git *p)
+uint32_t num_packed_objects(const struct packed_git *p)
{
/* See check_packed_git_idx() */
- return (p->index_size - 20 - 20 - 4*256) / 24;
+ return (uint32_t)((p->index_size - 20 - 20 - 4*256) / 24);
}
-int nth_packed_object_sha1(const struct packed_git *p, int n,
+int nth_packed_object_sha1(const struct packed_git *p, uint32_t n,
unsigned char* sha1)
{
void *index = p->index_base + 256;
- if (n < 0 || num_packed_objects(p) <= n)
+ if (num_packed_objects(p) <= n)
return -1;
hashcpy(sha1, (unsigned char *) index + (24 * n) + 4);
return 0;
}
-unsigned long find_pack_entry_one(const unsigned char *sha1,
+off_t find_pack_entry_one(const unsigned char *sha1,
struct packed_git *p)
{
uint32_t *level1_ofs = p->index_base;
@@ -1400,7 +1416,7 @@ static int matches_pack_name(struct packed_git *p, const char *ig)
static int find_pack_entry(const unsigned char *sha1, struct pack_entry *e, const char **ignore_packed)
{
struct packed_git *p;
- unsigned long offset;
+ off_t offset;
prepare_packed_git();
@@ -2067,11 +2083,10 @@ int index_pipe(unsigned char *sha1, int fd, const char *type, int write_object)
int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object,
enum object_type type, const char *path)
{
- unsigned long size = st->st_size;
- void *buf;
+ size_t size = xsize_t(st->st_size);
+ void *buf = NULL;
int ret, re_allocated = 0;
- buf = "";
if (size)
buf = xmmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
close(fd);
@@ -2111,6 +2126,7 @@ int index_path(unsigned char *sha1, const char *path, struct stat *st, int write
{
int fd;
char *target;
+ size_t len;
switch (st->st_mode & S_IFMT) {
case S_IFREG:
@@ -2123,16 +2139,17 @@ int index_path(unsigned char *sha1, const char *path, struct stat *st, int write
path);
break;
case S_IFLNK:
- target = xmalloc(st->st_size+1);
- if (readlink(path, target, st->st_size+1) != st->st_size) {
+ len = xsize_t(st->st_size);
+ target = xmalloc(len + 1);
+ if (readlink(path, target, len + 1) != st->st_size) {
char *errstr = strerror(errno);
free(target);
return error("readlink(\"%s\"): %s", path,
errstr);
}
if (!write_object)
- hash_sha1_file(target, st->st_size, blob_type, sha1);
- else if (write_sha1_file(target, st->st_size, blob_type, sha1))
+ hash_sha1_file(target, len, blob_type, sha1);
+ else if (write_sha1_file(target, len, blob_type, sha1))
return error("%s: failed to insert into database",
path);
free(target);
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