diff options
Diffstat (limited to 'fs/udf/super.c')
| -rw-r--r-- | fs/udf/super.c | 74 |
1 files changed, 70 insertions, 4 deletions
diff --git a/fs/udf/super.c b/fs/udf/super.c index 3afe7647f94a..f3ac4abfc946 100644 --- a/fs/udf/super.c +++ b/fs/udf/super.c @@ -53,6 +53,8 @@ #include <linux/vfs.h> #include <linux/vmalloc.h> #include <linux/errno.h> +#include <linux/mount.h> +#include <linux/seq_file.h> #include <asm/byteorder.h> #include <linux/udf_fs.h> @@ -71,6 +73,8 @@ #define VDS_POS_TERMINATING_DESC 6 #define VDS_POS_LENGTH 7 +#define UDF_DEFAULT_BLOCKSIZE 2048 + static char error_buf[1024]; /* These are the "meat" - everything else is stuffing */ @@ -95,6 +99,7 @@ static void udf_open_lvid(struct super_block *); static void udf_close_lvid(struct super_block *); static unsigned int udf_count_free(struct super_block *); static int udf_statfs(struct dentry *, struct kstatfs *); +static int udf_show_options(struct seq_file *, struct vfsmount *); struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi) { @@ -181,6 +186,7 @@ static const struct super_operations udf_sb_ops = { .write_super = udf_write_super, .statfs = udf_statfs, .remount_fs = udf_remount_fs, + .show_options = udf_show_options, }; struct udf_options { @@ -247,6 +253,61 @@ static int udf_sb_alloc_partition_maps(struct super_block *sb, u32 count) return 0; } +static int udf_show_options(struct seq_file *seq, struct vfsmount *mnt) +{ + struct super_block *sb = mnt->mnt_sb; + struct udf_sb_info *sbi = UDF_SB(sb); + + if (!UDF_QUERY_FLAG(sb, UDF_FLAG_STRICT)) + seq_puts(seq, ",nostrict"); + if (sb->s_blocksize != UDF_DEFAULT_BLOCKSIZE) + seq_printf(seq, ",bs=%lu", sb->s_blocksize); + if (UDF_QUERY_FLAG(sb, UDF_FLAG_UNHIDE)) + seq_puts(seq, ",unhide"); + if (UDF_QUERY_FLAG(sb, UDF_FLAG_UNDELETE)) + seq_puts(seq, ",undelete"); + if (!UDF_QUERY_FLAG(sb, UDF_FLAG_USE_AD_IN_ICB)) + seq_puts(seq, ",noadinicb"); + if (UDF_QUERY_FLAG(sb, UDF_FLAG_USE_SHORT_AD)) + seq_puts(seq, ",shortad"); + if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_FORGET)) + seq_puts(seq, ",uid=forget"); + if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_IGNORE)) + seq_puts(seq, ",uid=ignore"); + if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_FORGET)) + seq_puts(seq, ",gid=forget"); + if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_IGNORE)) + seq_puts(seq, ",gid=ignore"); + if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_SET)) + seq_printf(seq, ",uid=%u", sbi->s_uid); + if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_SET)) + seq_printf(seq, ",gid=%u", sbi->s_gid); + if (sbi->s_umask != 0) + seq_printf(seq, ",umask=%o", sbi->s_umask); + if (UDF_QUERY_FLAG(sb, UDF_FLAG_SESSION_SET)) + seq_printf(seq, ",session=%u", sbi->s_session); + if (UDF_QUERY_FLAG(sb, UDF_FLAG_LASTBLOCK_SET)) + seq_printf(seq, ",lastblock=%u", sbi->s_last_block); + /* + * s_anchor[2] could be zeroed out in case there is no anchor + * in the specified block, but then the "anchor=N" option + * originally given by the user wasn't effective, so it's OK + * if we don't show it. + */ + if (sbi->s_anchor[2] != 0) + seq_printf(seq, ",anchor=%u", sbi->s_anchor[2]); + /* + * volume, partition, fileset and rootdir seem to be ignored + * currently + */ + if (UDF_QUERY_FLAG(sb, UDF_FLAG_UTF8)) + seq_puts(seq, ",utf8"); + if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP) && sbi->s_nls_map) + seq_printf(seq, ",iocharset=%s", sbi->s_nls_map->charset); + + return 0; +} + /* * udf_parse_options * @@ -339,13 +400,14 @@ static match_table_t tokens = { {Opt_err, NULL} }; -static int udf_parse_options(char *options, struct udf_options *uopt) +static int udf_parse_options(char *options, struct udf_options *uopt, + bool remount) { char *p; int option; uopt->novrs = 0; - uopt->blocksize = 2048; + uopt->blocksize = UDF_DEFAULT_BLOCKSIZE; uopt->partition = 0xFFFF; uopt->session = 0xFFFFFFFF; uopt->lastblock = 0; @@ -415,11 +477,15 @@ static int udf_parse_options(char *options, struct udf_options *uopt) if (match_int(args, &option)) return 0; uopt->session = option; + if (!remount) + uopt->flags |= (1 << UDF_FLAG_SESSION_SET); break; case Opt_lastblock: if (match_int(args, &option)) return 0; uopt->lastblock = option; + if (!remount) + uopt->flags |= (1 << UDF_FLAG_LASTBLOCK_SET); break; case Opt_anchor: if (match_int(args, &option)) @@ -497,7 +563,7 @@ static int udf_remount_fs(struct super_block *sb, int *flags, char *options) uopt.gid = sbi->s_gid; uopt.umask = sbi->s_umask; - if (!udf_parse_options(options, &uopt)) + if (!udf_parse_options(options, &uopt, true)) return -EINVAL; sbi->s_flags = uopt.flags; @@ -1679,7 +1745,7 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent) mutex_init(&sbi->s_alloc_mutex); - if (!udf_parse_options((char *)options, &uopt)) + if (!udf_parse_options((char *)options, &uopt, false)) goto error_out; if (uopt.flags & (1 << UDF_FLAG_UTF8) && |