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| author | Eric W. Biederman <ebiederm@xmission.com> | 2012-02-07 16:25:39 -0800 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2012-09-20 06:11:55 -0700 |
| commit | 170782eb89462d30302cec12378253115b492b38 (patch) | |
| tree | eff2d455057fcd084071487139ba89521f287032 /fs/fat | |
| parent | 1a06d420ce9d60b98f5bdf5fd6e4200abfbd3c35 (diff) | |
| download | linux-170782eb89462d30302cec12378253115b492b38.tar.gz linux-170782eb89462d30302cec12378253115b492b38.tar.bz2 linux-170782eb89462d30302cec12378253115b492b38.zip | |
userns: Convert fat to use kuid/kgid where appropriate
Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'fs/fat')
| -rw-r--r-- | fs/fat/fat.h | 4 | ||||
| -rw-r--r-- | fs/fat/file.c | 6 | ||||
| -rw-r--r-- | fs/fat/inode.c | 18 |
3 files changed, 17 insertions, 11 deletions
diff --git a/fs/fat/fat.h b/fs/fat/fat.h index 2deeeb86f331..7d8e0dcac5d5 100644 --- a/fs/fat/fat.h +++ b/fs/fat/fat.h @@ -23,8 +23,8 @@ #define FAT_ERRORS_RO 3 /* remount r/o on error */ struct fat_mount_options { - uid_t fs_uid; - gid_t fs_gid; + kuid_t fs_uid; + kgid_t fs_gid; unsigned short fs_fmask; unsigned short fs_dmask; unsigned short codepage; /* Codepage for shortname conversions */ diff --git a/fs/fat/file.c b/fs/fat/file.c index e007b8bd8e5e..a62e0ecbe2db 100644 --- a/fs/fat/file.c +++ b/fs/fat/file.c @@ -352,7 +352,7 @@ static int fat_allow_set_time(struct msdos_sb_info *sbi, struct inode *inode) { umode_t allow_utime = sbi->options.allow_utime; - if (current_fsuid() != inode->i_uid) { + if (!uid_eq(current_fsuid(), inode->i_uid)) { if (in_group_p(inode->i_gid)) allow_utime >>= 3; if (allow_utime & MAY_WRITE) @@ -407,9 +407,9 @@ int fat_setattr(struct dentry *dentry, struct iattr *attr) } if (((attr->ia_valid & ATTR_UID) && - (attr->ia_uid != sbi->options.fs_uid)) || + (!uid_eq(attr->ia_uid, sbi->options.fs_uid))) || ((attr->ia_valid & ATTR_GID) && - (attr->ia_gid != sbi->options.fs_gid)) || + (!gid_eq(attr->ia_gid, sbi->options.fs_gid))) || ((attr->ia_valid & ATTR_MODE) && (attr->ia_mode & ~FAT_VALID_MODE))) error = -EPERM; diff --git a/fs/fat/inode.c b/fs/fat/inode.c index 05e897fe9866..47d9eb0be886 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -791,10 +791,12 @@ static int fat_show_options(struct seq_file *m, struct dentry *root) struct fat_mount_options *opts = &sbi->options; int isvfat = opts->isvfat; - if (opts->fs_uid != 0) - seq_printf(m, ",uid=%u", opts->fs_uid); - if (opts->fs_gid != 0) - seq_printf(m, ",gid=%u", opts->fs_gid); + if (!uid_eq(opts->fs_uid, GLOBAL_ROOT_UID)) + seq_printf(m, ",uid=%u", + from_kuid_munged(&init_user_ns, opts->fs_uid)); + if (!gid_eq(opts->fs_gid, GLOBAL_ROOT_GID)) + seq_printf(m, ",gid=%u", + from_kgid_munged(&init_user_ns, opts->fs_gid)); seq_printf(m, ",fmask=%04o", opts->fs_fmask); seq_printf(m, ",dmask=%04o", opts->fs_dmask); if (opts->allow_utime) @@ -1037,12 +1039,16 @@ static int parse_options(struct super_block *sb, char *options, int is_vfat, case Opt_uid: if (match_int(&args[0], &option)) return 0; - opts->fs_uid = option; + opts->fs_uid = make_kuid(current_user_ns(), option); + if (!uid_valid(opts->fs_uid)) + return 0; break; case Opt_gid: if (match_int(&args[0], &option)) return 0; - opts->fs_gid = option; + opts->fs_gid = make_kgid(current_user_ns(), option); + if (!gid_valid(opts->fs_gid)) + return 0; break; case Opt_umask: if (match_octal(&args[0], &option)) |