diff options
Diffstat (limited to 'sbin')
| -rw-r--r-- | sbin/mdconfig/mdconfig.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/sbin/mdconfig/mdconfig.c b/sbin/mdconfig/mdconfig.c index 02f128763c21..e3ca148d7fa9 100644 --- a/sbin/mdconfig/mdconfig.c +++ b/sbin/mdconfig/mdconfig.c @@ -12,6 +12,7 @@ #include <stdio.h> #include <stdlib.h> +#include <errno.h> #include <fcntl.h> #include <unistd.h> #include <inttypes.h> @@ -233,6 +234,16 @@ main(int argc, char **argv) if (cmdline == 2 && mdio.md_type == MD_VNODE) if (mdio.md_file[0] == '\0') errx(1, "must specify -f for -t vnode"); + if (mdio.md_type == MD_VNODE && + (mdio.md_options & MD_READONLY) == 0) { + if (access(mdio.md_file, W_OK) < 0 && + (errno == EACCES || errno == EPERM || errno == EROFS)) { + fprintf(stderr, + "WARNING: opening backing store: %s readonly\n", + mdio.md_file); + mdio.md_options |= MD_READONLY; + } + } if (action == LIST) { if (mdio.md_options & MD_AUTOUNIT) list(fd); |