Make templates honour SHELL_PATH and PERL_PATH

[git.git] / sha1_file.c

diff --git a/sha1_file.c b/sha1_file.c
index 9196b5783da5eb82f9ef7809c9439a9c7e0d797f..a08a9d08808bdb2f4a138d7e6f602b61fc093c1b 100644 (file)
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -35,13 +35,6 @@ static size_t sz_fmt(size_t s) { return s; }
 
 const unsigned char null_sha1[20];
 
-static inline int offset_1st_component(const char *path)
-{
-       if (has_dos_drive_prefix(path))
-               return 2 + (path[2] == '/');
-       return *path == '/';
-}
-
 int safe_create_leading_directories(char *path)
 {
        char *pos = path + offset_1st_component(path);
@@ -2206,7 +2199,7 @@ int move_temp_to_file(const char *tmpfile, const char *filename)
        }
 
 out:
-       if (set_shared_perm(filename, (S_IFREG|0444)))
+       if (adjust_shared_perm(filename))
                return error("unable to set permission to '%s'", filename);
        return 0;
 }
@@ -2262,7 +2255,7 @@ static int create_tmpfile(char *buffer, size_t bufsiz, const char *filename)
        }
        memcpy(buffer, filename, dirlen);
        strcpy(buffer + dirlen, "tmp_obj_XXXXXX");
-       fd = mkstemp(buffer);
+       fd = git_mkstemp_mode(buffer, 0444);
        if (fd < 0 && dirlen && errno == ENOENT) {
                /* Make sure the directory exists */
                memcpy(buffer, filename, dirlen);
@@ -2272,7 +2265,7 @@ static int create_tmpfile(char *buffer, size_t bufsiz, const char *filename)
 
                /* Try again */
                strcpy(buffer + dirlen - 1, "/tmp_obj_XXXXXX");
-               fd = mkstemp(buffer);
+               fd = git_mkstemp_mode(buffer, 0444);
        }
        return fd;
 }
@@ -2283,6 +2276,8 @@ static int write_loose_object(const unsigned char *sha1, char *hdr, int hdrlen,
        int fd, ret;
        unsigned char compressed[4096];
        z_stream stream;
+       git_SHA_CTX c;
+       unsigned char parano_sha1[20];
        char *filename;
        static char tmpfile[PATH_MAX];
 
@@ -2302,18 +2297,22 @@ static int write_loose_object(const unsigned char *sha1, char *hdr, int hdrlen,
        deflateInit(&stream, zlib_compression_level);
        stream.next_out = compressed;
        stream.avail_out = sizeof(compressed);
+       git_SHA1_Init(&c);
 
        /* First header.. */
        stream.next_in = (unsigned char *)hdr;
        stream.avail_in = hdrlen;
        while (deflate(&stream, 0) == Z_OK)
                /* nothing */;
+       git_SHA1_Update(&c, hdr, hdrlen);
 
        /* Then the data itself.. */
        stream.next_in = buf;
        stream.avail_in = len;
        do {
+               unsigned char *in0 = stream.next_in;
                ret = deflate(&stream, Z_FINISH);
+               git_SHA1_Update(&c, in0, stream.next_in - in0);
                if (write_buffer(fd, compressed, stream.next_out - compressed) < 0)
                        die("unable to write sha1 file");
                stream.next_out = compressed;
@@ -2325,6 +2324,9 @@ static int write_loose_object(const unsigned char *sha1, char *hdr, int hdrlen,
        ret = deflateEnd(&stream);
        if (ret != Z_OK)
                die("deflateEnd on object %s failed (%d)", sha1_to_hex(sha1), ret);
+       git_SHA1_Final(parano_sha1, &c);
+       if (hashcmp(sha1, parano_sha1) != 0)
+               die("confused by unstable object source data for %s", sha1_to_hex(sha1));
 
        close_sha1_file(fd);
 
@@ -2430,6 +2432,8 @@ static int index_mem(unsigned char *sha1, void *buf, size_t size,
        return ret;
 }
 
+#define SMALL_FILE_SIZE (32*1024)
+
 int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object,
             enum object_type type, const char *path)
 {
@@ -2444,6 +2448,14 @@ int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object,
                else
                        ret = -1;
                strbuf_release(&sbuf);
+       } else if (size <= SMALL_FILE_SIZE) {
+               char *buf = xmalloc(size);
+               if (size == read_in_full(fd, buf, size))
+                       ret = index_mem(sha1, buf, size, write_object, type,
+                                       path);
+               else
+                       ret = error("short read %s", strerror(errno));
+               free(buf);
        } else if (size) {
                void *buf = xmmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
                ret = index_mem(sha1, buf, size, write_object, type, path);