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| author | Richard Weinberger <richard@nod.at> | 2018-07-12 14:01:59 +0300 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2018-08-15 01:25:21 +0300 |
| commit | c38c5a7f2e5056555c22e7603c2151b118f3a494 (patch) | |
| tree | 3b1b99d7cf709d3c0196b2304383277d8d4dcb85 | |
| parent | 2e52eb74463f15c745d64948cedfaee722d6268c (diff) | |
| download | linux-c38c5a7f2e5056555c22e7603c2151b118f3a494.tar.xz | |
ubifs: Allow setting assert action as mount parameter
Expose our three options to userspace.
Signed-off-by: Richard Weinberger <richard@nod.at>
| -rw-r--r-- | fs/ubifs/misc.c | 11 | ||||
| -rw-r--r-- | fs/ubifs/misc.h | 2 | ||||
| -rw-r--r-- | fs/ubifs/super.c | 24 |
3 files changed, 37 insertions, 0 deletions
diff --git a/fs/ubifs/misc.c b/fs/ubifs/misc.c index 586fd5b578a7..cd23de0f211d 100644 --- a/fs/ubifs/misc.c +++ b/fs/ubifs/misc.c @@ -56,3 +56,14 @@ void ubifs_warn(const struct ubifs_info *c, const char *fmt, ...) va_end(args); } + +static char *assert_names[] = { + [ASSACT_REPORT] = "report", + [ASSACT_RO] = "read-only", + [ASSACT_PANIC] = "panic", +}; + +const char *ubifs_assert_action_name(struct ubifs_info *c) +{ + return assert_names[c->assert_action]; +} diff --git a/fs/ubifs/misc.h b/fs/ubifs/misc.h index f5d180c0c52e..21d35d7dd975 100644 --- a/fs/ubifs/misc.h +++ b/fs/ubifs/misc.h @@ -287,4 +287,6 @@ static inline int ubifs_next_log_lnum(const struct ubifs_info *c, int lnum) return lnum; } +const char *ubifs_assert_action_name(struct ubifs_info *c); + #endif /* __UBIFS_MISC_H__ */ diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index df73b0e1c2f7..c31e7b4f1e1c 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -445,6 +445,7 @@ static int ubifs_show_options(struct seq_file *s, struct dentry *root) ubifs_compr_name(c, c->mount_opts.compr_type)); } + seq_printf(s, ",assert=%s", ubifs_assert_action_name(c)); seq_printf(s, ",ubi=%d,vol=%d", c->vi.ubi_num, c->vi.vol_id); return 0; @@ -922,6 +923,7 @@ static int check_volume_empty(struct ubifs_info *c) * Opt_chk_data_crc: check CRCs when reading data nodes * Opt_no_chk_data_crc: do not check CRCs when reading data nodes * Opt_override_compr: override default compressor + * Opt_assert: set ubifs_assert() action * Opt_err: just end of array marker */ enum { @@ -932,6 +934,7 @@ enum { Opt_chk_data_crc, Opt_no_chk_data_crc, Opt_override_compr, + Opt_assert, Opt_ignore, Opt_err, }; @@ -946,6 +949,7 @@ static const match_table_t tokens = { {Opt_override_compr, "compr=%s"}, {Opt_ignore, "ubi=%s"}, {Opt_ignore, "vol=%s"}, + {Opt_assert, "assert=%s"}, {Opt_err, NULL}, }; @@ -1046,6 +1050,26 @@ static int ubifs_parse_options(struct ubifs_info *c, char *options, c->default_compr = c->mount_opts.compr_type; break; } + case Opt_assert: + { + char *act = match_strdup(&args[0]); + + if (!act) + return -ENOMEM; + if (!strcmp(act, "report")) + c->assert_action = ASSACT_REPORT; + else if (!strcmp(act, "read-only")) + c->assert_action = ASSACT_RO; + else if (!strcmp(act, "panic")) + c->assert_action = ASSACT_PANIC; + else { + ubifs_err(c, "unknown assert action \"%s\"", act); + kfree(act); + return -EINVAL; + } + kfree(act); + break; + } case Opt_ignore: break; default: |