read-cache: use get_be32 instead of hand-rolled ntoh_l

diff --git a/read-cache.c b/read-cache.c
index c3d5e3543fae75c81a7a0a00c48bb0076675a2f1..422187262d8f03c2c32108c4f3cc046bb404214c 100644 (file)
--- a/read-cache.c
+++ b/read-cache.c
@@ -643,7 +643,7 @@ int add_to_index(struct index_state *istate, const char *path, struct stat *st,
                        if (*ptr == '/') {
                                struct cache_entry *foundce;
                                ++ptr;
-                               foundce = index_name_exists(istate, ce->name, ptr - ce->name, ignore_case);
+                               foundce = index_dir_exists(istate, ce->name, ptr - ce->name - 1);
                                if (foundce) {
                                        memcpy((void *)startPtr, foundce->name + (startPtr - ce->name), ptr - startPtr);
                                        startPtr = ptr;
@@ -652,7 +652,7 @@ int add_to_index(struct index_state *istate, const char *path, struct stat *st,
                }
        }
 
-       alias = index_name_exists(istate, ce->name, ce_namelen(ce), ignore_case);
+       alias = index_file_exists(istate, ce->name, ce_namelen(ce), ignore_case);
        if (alias && !ce_stage(alias) && !ie_match_stat(istate, alias, st, ce_option)) {
                /* Nothing changed, really */
                free(ce);
@@ -1114,7 +1114,8 @@ static void show_file(const char * fmt, const char * name, int in_porcelain,
        printf(fmt, name);
 }
 
-int refresh_index(struct index_state *istate, unsigned int flags, const char **pathspec,
+int refresh_index(struct index_state *istate, unsigned int flags,
+                 const struct pathspec *pathspec,
                  char *seen, const char *header_msg)
 {
        int i;
@@ -1149,7 +1150,7 @@ int refresh_index(struct index_state *istate, unsigned int flags, const char **p
                        continue;
 
                if (pathspec &&
-                   !match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen))
+                   !match_pathspec_depth(pathspec, ce->name, ce_namelen(ce), 0, seen))
                        filtered = 1;
 
                if (ce_stage(ce)) {
@@ -1229,14 +1230,14 @@ static struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int reall
 struct ondisk_cache_entry {
        struct cache_time ctime;
        struct cache_time mtime;
-       unsigned int dev;
-       unsigned int ino;
-       unsigned int mode;
-       unsigned int uid;
-       unsigned int gid;
-       unsigned int size;
+       uint32_t dev;
+       uint32_t ino;
+       uint32_t mode;
+       uint32_t uid;
+       uint32_t gid;
+       uint32_t size;
        unsigned char sha1[20];
-       unsigned short flags;
+       uint16_t flags;
        char name[FLEX_ARRAY]; /* more */
 };
 
@@ -1248,15 +1249,15 @@ struct ondisk_cache_entry {
 struct ondisk_cache_entry_extended {
        struct cache_time ctime;
        struct cache_time mtime;
-       unsigned int dev;
-       unsigned int ino;
-       unsigned int mode;
-       unsigned int uid;
-       unsigned int gid;
-       unsigned int size;
+       uint32_t dev;
+       uint32_t ino;
+       uint32_t mode;
+       uint32_t uid;
+       uint32_t gid;
+       uint32_t size;
        unsigned char sha1[20];
-       unsigned short flags;
-       unsigned short flags2;
+       uint16_t flags;
+       uint16_t flags2;
        char name[FLEX_ARRAY]; /* more */
 };
 
@@ -1312,26 +1313,6 @@ int read_index(struct index_state *istate)
        return read_index_from(istate, get_index_file());
 }
 
-#ifndef NEEDS_ALIGNED_ACCESS
-#define ntoh_s(var) ntohs(var)
-#define ntoh_l(var) ntohl(var)
-#else
-static inline uint16_t ntoh_s_force_align(void *p)
-{
-       uint16_t x;
-       memcpy(&x, p, sizeof(x));
-       return ntohs(x);
-}
-static inline uint32_t ntoh_l_force_align(void *p)
-{
-       uint32_t x;
-       memcpy(&x, p, sizeof(x));
-       return ntohl(x);
-}
-#define ntoh_s(var) ntoh_s_force_align(&(var))
-#define ntoh_l(var) ntoh_l_force_align(&(var))
-#endif
-
 static struct cache_entry *cache_entry_from_ondisk(struct ondisk_cache_entry *ondisk,
                                                   unsigned int flags,
                                                   const char *name,
@@ -1339,16 +1320,16 @@ static struct cache_entry *cache_entry_from_ondisk(struct ondisk_cache_entry *on
 {
        struct cache_entry *ce = xmalloc(cache_entry_size(len));
 
-       ce->ce_stat_data.sd_ctime.sec = ntoh_l(ondisk->ctime.sec);
-       ce->ce_stat_data.sd_mtime.sec = ntoh_l(ondisk->mtime.sec);
-       ce->ce_stat_data.sd_ctime.nsec = ntoh_l(ondisk->ctime.nsec);
-       ce->ce_stat_data.sd_mtime.nsec = ntoh_l(ondisk->mtime.nsec);
-       ce->ce_stat_data.sd_dev   = ntoh_l(ondisk->dev);
-       ce->ce_stat_data.sd_ino   = ntoh_l(ondisk->ino);
-       ce->ce_mode  = ntoh_l(ondisk->mode);
-       ce->ce_stat_data.sd_uid   = ntoh_l(ondisk->uid);
-       ce->ce_stat_data.sd_gid   = ntoh_l(ondisk->gid);
-       ce->ce_stat_data.sd_size  = ntoh_l(ondisk->size);
+       ce->ce_stat_data.sd_ctime.sec = get_be32(&ondisk->ctime.sec);
+       ce->ce_stat_data.sd_mtime.sec = get_be32(&ondisk->mtime.sec);
+       ce->ce_stat_data.sd_ctime.nsec = get_be32(&ondisk->ctime.nsec);
+       ce->ce_stat_data.sd_mtime.nsec = get_be32(&ondisk->mtime.nsec);
+       ce->ce_stat_data.sd_dev   = get_be32(&ondisk->dev);
+       ce->ce_stat_data.sd_ino   = get_be32(&ondisk->ino);
+       ce->ce_mode  = get_be32(&ondisk->mode);
+       ce->ce_stat_data.sd_uid   = get_be32(&ondisk->uid);
+       ce->ce_stat_data.sd_gid   = get_be32(&ondisk->gid);
+       ce->ce_stat_data.sd_size  = get_be32(&ondisk->size);
        ce->ce_flags = flags & ~CE_NAMEMASK;
        ce->ce_namelen = len;
        hashcpy(ce->sha1, ondisk->sha1);
@@ -1388,14 +1369,14 @@ static struct cache_entry *create_from_disk(struct ondisk_cache_entry *ondisk,
        unsigned int flags;
 
        /* On-disk flags are just 16 bits */
-       flags = ntoh_s(ondisk->flags);
+       flags = get_be16(&ondisk->flags);
        len = flags & CE_NAMEMASK;
 
        if (flags & CE_EXTENDED) {
                struct ondisk_cache_entry_extended *ondisk2;
                int extended_flags;
                ondisk2 = (struct ondisk_cache_entry_extended *)ondisk;
-               extended_flags = ntoh_s(ondisk2->flags2) << 16;
+               extended_flags = get_be16(&ondisk2->flags2) << 16;
                /* We do not yet understand any bit out of CE_EXTENDED_FLAGS */
                if (extended_flags & ~CE_EXTENDED_FLAGS)
                        die("Unknown index entry format %08x", extended_flags);
@@ -1817,8 +1798,17 @@ int write_index(struct index_state *istate, int newfd)
                        continue;
                if (!ce_uptodate(ce) && is_racy_timestamp(istate, ce))
                        ce_smudge_racily_clean_entry(ce);
-               if (is_null_sha1(ce->sha1))
-                       return error("cache entry has null sha1: %s", ce->name);
+               if (is_null_sha1(ce->sha1)) {
+                       static const char msg[] = "cache entry has null sha1: %s";
+                       static int allow = -1;
+
+                       if (allow < 0)
+                               allow = git_env_bool("GIT_ALLOW_NULL_SHA1", 0);
+                       if (allow)
+                               warning(msg, ce->name);
+                       else
+                               return error(msg, ce->name);
+               }
                if (ce_write_entry(&c, newfd, ce, previous_name) < 0)
                        return -1;
        }