diff options
| author |   Ronnie Sahlberg <lsahlber@redhat.com> | 2021-07-08 09:24:16 +1000 |
|---|---|---|
| committer |   Steve French <stfrench@microsoft.com> | 2021-07-08 18:25:04 -0500 |
| commit | e0a3cbcd5cef00cace01546cc6eaaa3b31940da9 (patch) | |
| tree | e62be2362cf6e4522e61f5dd2f5ddeced075e4f9 /fs | |
| parent | CIFS: Clarify SMB1 code for POSIX Lock (diff) | |
| download | linux-dev-e0a3cbcd5cef00cace01546cc6eaaa3b31940da9.tar.xz linux-dev-e0a3cbcd5cef00cace01546cc6eaaa3b31940da9.zip | |
cifs: use helpers when parsing uid/gid mount options and validate them
Use the nice helpers to initialize and the uid/gid/cred_uid when passed as mount arguments.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Acked-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/cifs/fs_context.c | 24 | ||||
| -rw-r--r-- | fs/cifs/fs_context.h | 1 |
2 files changed, 20 insertions, 5 deletions
diff --git a/fs/cifs/fs_context.c b/fs/cifs/fs_context.c index 92d4ab029c91..553adfbcc22a 100644 --- a/fs/cifs/fs_context.c +++ b/fs/cifs/fs_context.c @@ -322,7 +322,6 @@ smb3_fs_context_dup(struct smb3_fs_context *new_ctx, struct smb3_fs_context *ctx new_ctx->UNC = NULL; new_ctx->source = NULL; new_ctx->iocharset = NULL; - /* * Make sure to stay in sync with smb3_cleanup_fs_context_contents() */ @@ -792,6 +791,8 @@ static int smb3_fs_context_parse_param(struct fs_context *fc, int i, opt; bool is_smb3 = !strcmp(fc->fs_type->name, "smb3"); bool skip_parsing = false; + kuid_t uid; + kgid_t gid; cifs_dbg(FYI, "CIFS: parsing cifs mount option '%s'\n", param->key); @@ -904,18 +905,31 @@ static int smb3_fs_context_parse_param(struct fs_context *fc, } break; case Opt_uid: - ctx->linux_uid.val = result.uint_32; + uid = make_kuid(current_user_ns(), result.uint_32); + if (!uid_valid(uid)) + goto cifs_parse_mount_err; + ctx->linux_uid = uid; ctx->uid_specified = true; break; case Opt_cruid: - ctx->cred_uid.val = result.uint_32; + uid = make_kuid(current_user_ns(), result.uint_32); + if (!uid_valid(uid)) + goto cifs_parse_mount_err; + ctx->cred_uid = uid; + ctx->cruid_specified = true; break; case Opt_backupgid: - ctx->backupgid.val = result.uint_32; + gid = make_kgid(current_user_ns(), result.uint_32); + if (!gid_valid(gid)) + goto cifs_parse_mount_err; + ctx->backupgid = gid; ctx->backupgid_specified = true; break; case Opt_gid: - ctx->linux_gid.val = result.uint_32; + gid = make_kgid(current_user_ns(), result.uint_32); + if (!gid_valid(gid)) + goto cifs_parse_mount_err; + ctx->linux_gid = gid; ctx->gid_specified = true; break; case Opt_port: diff --git a/fs/cifs/fs_context.h b/fs/cifs/fs_context.h index 2a71c8e411ac..b6243972edf3 100644 --- a/fs/cifs/fs_context.h +++ b/fs/cifs/fs_context.h @@ -155,6 +155,7 @@ enum cifs_param { struct smb3_fs_context { bool uid_specified; + bool cruid_specified; bool gid_specified; bool sloppy; bool got_ip; |