Add -n -p and -y options to make it official as fsck utilities.
-p, automatic repair (no questions)
-n, make no changes to the filesystem
-y, assume "yes" to all questions
Signed-off-by: zhangyi (F) <yi.zhang@xxxxxxxxxx>
---
README.md | 6 ++++--
fsck.c | 36 ++++++++++++++++++++++++++++++------
lib.c | 3 ++-
lib.h | 6 +++++-
4 files changed, 41 insertions(+), 10 deletions(-)
diff --git a/README.md b/README.md
index c2acb65..458a815 100644
--- a/README.md
+++ b/README.md
@@ -44,14 +44,16 @@ Usage
2. Run fsck.overlay program:
Usage:
- fsck.overlay [-l lowerdir] [-u upperdir] [-w workdir] [-avhV]
+ fsck.overlay [-l lowerdir] [-u upperdir] [-w workdir] [-pnyvhV]
Options:
-l, --lowerdir=LOWERDIR specify lower directories of overlayfs,
multiple lower use ':' as separator.
-u, --upperdir=UPPERDIR specify upper directory of overlayfs
-w, --workdir=WORKDIR specify work directory of overlayfs
- -a, --auto repair automatically (no questions)
+ -p, automatic repair (no questions)
+ -n, make no changes to the filesystem
+ -y, assume "yes" to all questions
-v, --verbose print more messages of overlayfs
-h, --help display this usage of overlayfs
-V, --version display version information
diff --git a/fsck.c b/fsck.c
index d4e861a..44211f7 100644
--- a/fsck.c
+++ b/fsck.c
@@ -62,13 +62,15 @@ static void ovl_clean_lowerdirs(void)
static void usage(void)
{
print_info(_("Usage:\n\t%s [-l lowerdir] [-u upperdir] [-w workdir] "
- "[-avhV]\n\n"), program_name);
+ "[-pnyvhV]\n\n"), program_name);
print_info(_("Options:\n"
"-l, --lowerdir=LOWERDIR specify lower directories of overlayfs,\n"
" multiple lower use ':' as separator\n"
"-u, --upperdir=UPPERDIR specify upper directory of overlayfs\n"
"-w, --workdir=WORKDIR specify work directory of overlayfs\n"
- "-a, --auto repair automatically (no questions)\n"
+ "-p, automatic repair (no questions)\n"
+ "-n, make no changes to the filesystem\n"
+ "-y, assume \"yes\" to all questions\n"
"-v, --verbose print more messages of overlayfs\n"
"-h, --help display this usage of overlayfs\n"
"-V, --version display version information\n"));
@@ -81,19 +83,19 @@ static void parse_options(int argc, char *argv[])
int c;
int ret = 0;
bool show_usage = false;
+ bool opt_conflict = false;
struct option long_options[] = {
{"lowerdir", required_argument, NULL, 'l'},
{"upperdir", required_argument, NULL, 'u'},
{"workdir", required_argument, NULL, 'w'},
- {"auto", no_argument, NULL, 'a'},
{"verbose", no_argument, NULL, 'v'},
{"version", no_argument, NULL, 'V'},
{"help", no_argument, NULL, 'h'},
{NULL, 0, NULL, 0}
};
- while ((c = getopt_long(argc, argv, "l:u:w:avVh", long_options, NULL)) != -1) {
+ while ((c = getopt_long(argc, argv, "l:u:w:apnyvVh", long_options, NULL)) != -1) {
switch (c) {
case 'l':
lowertemp = strdup(optarg);
@@ -119,7 +121,23 @@ static void parse_options(int argc, char *argv[])
}
break;
case 'a':
- flags |= FL_AUTO;
+ case 'p':
+ if (flags & (FL_OPT_YES | FL_OPT_NO))
+ opt_conflict = true;
+ else
+ flags |= FL_OPT_AUTO;
+ break;
+ case 'n':
+ if (flags & (FL_OPT_YES | FL_OPT_AUTO))
+ opt_conflict = true;
+ else
+ flags |= FL_OPT_NO;
+ break;
+ case 'y':
+ if (flags & (FL_OPT_NO | FL_OPT_AUTO))
+ opt_conflict = true;
+ else
+ flags |= FL_OPT_YES;
break;
case 'v':
flags |= FL_VERBOSE;
@@ -143,6 +161,12 @@ static void parse_options(int argc, char *argv[])
goto err_out;
}
+ if (opt_conflict) {
+ print_info(_("Only one of the options -p/-a, -n or -y can be specified!\n\n"));
+ show_usage = true;
+ goto err_out;
+ }
+
return;
err_out:
@@ -177,7 +201,7 @@ int main(int argc, char *argv[])
/* Ensure overlay filesystem not mounted */
if ((err = ovl_check_mount(&mounted)))
goto out;
- if (mounted) {
+ if (mounted && !(flags & FL_OPT_NO)) {
set_st_abort(&status);
goto out;
}
diff --git a/lib.c b/lib.c
index 271cafd..497d357 100644
--- a/lib.c
+++ b/lib.c
@@ -59,7 +59,8 @@ static int ask_yn(const char *question, int def)
/* Ask user */
int ask_question(const char *question, int def)
{
- if (flags & FL_AUTO) {
+ if (flags & FL_OPT_MASK) {
+ def = (flags & FL_OPT_YES) ? 1 : (flags & FL_OPT_NO) ? 0 : def;
print_info(_("%s? %s\n"), question, def ? _("y") : _("n"));
return def;
}
diff --git a/lib.h b/lib.h
index 235719c..5d94836 100644
--- a/lib.h
+++ b/lib.h
@@ -37,7 +37,11 @@
#define FL_VERBOSE (1 << 0) /* verbose */
#define FL_UPPER (1 << 1) /* specify upper directory */
#define FL_WORK (1 << 2) /* specify work directory */
-#define FL_AUTO (1 << 3) /* automactically scan dirs and repair */
+#define FL_OPT_AUTO (1 << 3) /* automactically scan dirs and repair */
+#define FL_OPT_NO (1 << 4) /* no changes to the filesystem */
+#define FL_OPT_YES (1 << 5) /* yes to all questions */
+#define FL_OPT_MASK (FL_OPT_AUTO|FL_OPT_NO|FL_OPT_YES)
+
/* Scan path type */
#define OVL_UPPER 0
--
2.9.5
--
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