tar-tree: add the "tar.umask" config option

By default, git-tar-tree(1) sets file and directories modes to 0666
or 0777. While this is both useful and acceptable for projects such
as the Linux Kernel, it might be excessive for other projects. With
this variable, it becomes possible to tell git-tar-tree(1) to apply
a specific umask to the modes above. The special value "user"
indicates that the user's current umask will be used. This should be
enough for most projects, as it will lead to the same permissions as
git-checkout(1) would use. The default value remains 0, which means
world read-write.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Acked-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Willy Tarreau
2006-07-20 11:30:44 +02:00
committed by Junio C Hamano
parent 1b91abe350
commit ce1a79b6a7
3 changed files with 43 additions and 4 deletions

View File

@ -20,6 +20,7 @@ static char block[BLOCKSIZE];
static unsigned long offset;
static time_t archive_time;
static int tar_umask;
/* tries hard to write, either succeeds or dies in the attempt */
static void reliable_write(const void *data, unsigned long size)
@ -188,13 +189,13 @@ static void write_entry(const unsigned char *sha1, struct strbuf *path,
} else {
if (S_ISDIR(mode)) {
*header.typeflag = TYPEFLAG_DIR;
mode |= 0777;
mode = (mode | 0777) & ~tar_umask;
} else if (S_ISLNK(mode)) {
*header.typeflag = TYPEFLAG_LNK;
mode |= 0777;
} else if (S_ISREG(mode)) {
*header.typeflag = TYPEFLAG_REG;
mode |= (mode & 0100) ? 0777 : 0666;
mode = (mode | ((mode & 0100) ? 0777 : 0666)) & ~tar_umask;
} else {
error("unsupported file mode: 0%o (SHA1: %s)",
mode, sha1_to_hex(sha1));
@ -293,6 +294,20 @@ static void traverse_tree(struct tree_desc *tree, struct strbuf *path)
}
}
int git_tar_config(const char *var, const char *value)
{
if (!strcmp(var, "tar.umask")) {
if (!strcmp(value, "user")) {
tar_umask = umask(0);
umask(tar_umask);
} else {
tar_umask = git_config_int(var, value);
}
return 0;
}
return git_default_config(var, value);
}
static int generate_tar(int argc, const char **argv, char** envp)
{
unsigned char sha1[20], tree_sha1[20];
@ -305,7 +320,7 @@ static int generate_tar(int argc, const char **argv, char** envp)
current_path.len = current_path.eof = 0;
setup_git_directory();
git_config(git_default_config);
git_config(git_tar_config);
switch (argc) {
case 3: