On 2017-04-19 19:28, René Scharfe wrote:
[]
One or two minor comments inline
> diff --git a/builtin/gc.c b/builtin/gc.c
> index 2daede7820..4c1c01e87d 100644
> --- a/builtin/gc.c
> +++ b/builtin/gc.c
> @@ -228,21 +228,99 @@ static int need_to_gc(void)
> return 1;
> }
>
> +struct pidfile {
> + struct strbuf buf;
> + char *hostname;
> +};
> +
> +#define PIDFILE_INIT { STRBUF_INIT }
> +
> +static void pidfile_release(struct pidfile *pf)
> +{
> + pf->hostname = NULL;
> + strbuf_release(&pf->buf);
> +}
> +
> +static int pidfile_read(struct pidfile *pf, const char *path,
> + unsigned int max_age_seconds)
> +{
> + int fd;
> + struct stat st;
> + ssize_t len;
> + char *space;
> + int rc = -1;
> +
> + fd = open(path, O_RDONLY);
> + if (fd < 0)
> + return rc;
> +
> + if (fstat(fd, &st))
> + goto out;
> + if (time(NULL) - st.st_mtime > max_age_seconds)
> + goto out;
> + if (st.st_size > (size_t)st.st_size)
Minor: we need xsize_t here ?
if (st.st_size > xsize_t(st.st_size))
> + goto out;
> +
> + len = strbuf_read(&pf->buf, fd, st.st_size);
> + if (len < 0)
> + goto out;
> +
> + space = strchr(pf->buf.buf, ' ');
> + if (!space) {
> + pidfile_release(pf);
> + goto out;
> + }
> + pf->hostname = space + 1;
> + *space = '\0';
> +
> + rc = 0;
> +out:
> + close(fd);
> + return rc;
> +}
> +
> +static int parse_pid(const char *value, pid_t *ret)
> +{
> + if (value && *value) {
> + char *end;
> + intmax_t val;
> +
> + errno = 0;
> + val = strtoimax(value, &end, 0);
> + if (errno == ERANGE)
> + return 0;
> + if (*end)
> + return 0;
> + if (labs(val) > maximum_signed_value_of_type(pid_t)) {
> + errno = ERANGE;
> + return 0;
> + }
> + *ret = val;
> + return 1;
> + }
> + errno = EINVAL;
> + return 0;
> +}
> +
> +static int pidfile_process_exists(const struct pidfile *pf)
> +{
> + pid_t pid;
> + return parse_pid(pf->buf.buf, &pid) &&
> + (!kill(pid, 0) || errno == EPERM);
> +}
> +
> /* return NULL on success, else hostname running the gc */
> -static const char *lock_repo_for_gc(int force, pid_t* ret_pid)
> +static int lock_repo_for_gc(int force, struct pidfile *pf)
> {
> static struct lock_file lock;
> char my_host[128];
Huh ?
should this be increased, may be in another path ?