Index: uspace/lib/c/generic/async.c
===================================================================
--- uspace/lib/c/generic/async.c	(revision 0d0b3197a149bb5e5c53d21136df5b8c283cdc4a)
+++ uspace/lib/c/generic/async.c	(revision 9ba415e8ec4bc684d1ba8a424cc83de1a57c7aa9)
@@ -844,5 +844,5 @@
  * @param port_id ID of the newly created port.
  *
- * @return Zero on success or a negative error code.
+ * @return Zero on success or an error code.
  *
  */
@@ -1053,5 +1053,5 @@
  * @param[out] handle  IRQ capability handle on success.
  *
- * @return Negative error code.
+ * @return An error code.
  *
  */
@@ -1089,5 +1089,5 @@
  * @param cap     IRQ capability handle. 
  *
- * @return Zero on success or a negative error code.
+ * @return Zero on success or an error code.
  *
  */
@@ -1106,5 +1106,5 @@
  * @param data    Notification handler client data.
  *
- * @return Zero on success or a negative error code.
+ * @return Zero on success or an error code.
  *
  */
@@ -1139,5 +1139,5 @@
  * @param data    Notification handler client data.
  *
- * @return Zero on success or a negative error code.
+ * @return Zero on success or an error code.
  *
  */
@@ -1915,5 +1915,5 @@
  * @param r5      If non-NULL, storage for the 5th reply argument.
  *
- * @return Return code of the reply or a negative error code.
+ * @return Return code of the reply or an error code.
  *
  */
@@ -1967,5 +1967,5 @@
  * @param r5      If non-NULL, storage for the 5th reply argument.
  *
- * @return Return code of the reply or a negative error code.
+ * @return Return code of the reply or an error code.
  *
  */
@@ -2108,5 +2108,5 @@
  * @param arg3            User defined argument.
  *
- * @return Zero on success or a negative error code.
+ * @return Zero on success or an error code.
  *
  */
@@ -2433,5 +2433,5 @@
  * @param sess Session to hung up.
  *
- * @return Zero on success or a negative error code.
+ * @return Zero on success or an error code.
  *
  */
@@ -2613,5 +2613,5 @@
  *              base address. Cannot be NULL.
  *
- * @return Zero on success or a negative error code from errno.h.
+ * @return Zero on success or an error code from errno.h.
  *
  */
@@ -2688,5 +2688,5 @@
  * @param flags Flags to be used for sharing. Bits can be only cleared.
  *
- * @return Zero on success or a negative error code from errno.h.
+ * @return Zero on success or an error code from errno.h.
  *
  */
@@ -2774,5 +2774,5 @@
  * @param size Size of the destination buffer.
  *
- * @return Zero on success or a negative error code from errno.h.
+ * @return Zero on success or an error code from errno.h.
  *
  */
@@ -2899,5 +2899,5 @@
  * @param size Size of the source buffer.
  *
- * @return Zero on success or a negative error code from errno.h.
+ * @return Zero on success or an error code from errno.h.
  *
  */
Index: uspace/lib/c/generic/clipboard.c
===================================================================
--- uspace/lib/c/generic/clipboard.c	(revision 0d0b3197a149bb5e5c53d21136df5b8c283cdc4a)
+++ uspace/lib/c/generic/clipboard.c	(revision 9ba415e8ec4bc684d1ba8a424cc83de1a57c7aa9)
@@ -95,5 +95,5 @@
  * @param str String to put to clipboard or NULL.
  *
- * @return Zero on success or negative error code.
+ * @return Zero on success or an error code.
  *
  */
@@ -137,5 +137,5 @@
  * @param str Here pointer to the newly allocated string is stored.
  *
- * @return Zero on success or negative error code.
+ * @return Zero on success or an error code.
  *
  */
Index: uspace/lib/c/generic/ddi.c
===================================================================
--- uspace/lib/c/generic/ddi.c	(revision 0d0b3197a149bb5e5c53d21136df5b8c283cdc4a)
+++ uspace/lib/c/generic/ddi.c	(revision 9ba415e8ec4bc684d1ba8a424cc83de1a57c7aa9)
@@ -226,5 +226,5 @@
  *
  * @return EOK on success.
- * @return Negative error code on failure.
+ * @return An error code on failure.
  *
  */
@@ -268,5 +268,5 @@
  *
  * @return EOK on success.
- * @return Negative error code on failure.
+ * @return An error code on failure.
  *
  */
@@ -306,5 +306,5 @@
  *
  * @return EOK on success.
- * @return Negative error code on failure.
+ * @return An error code on failure.
  *
  */
Index: uspace/lib/c/generic/device/clock_dev.c
===================================================================
--- uspace/lib/c/generic/device/clock_dev.c	(revision 0d0b3197a149bb5e5c53d21136df5b8c283cdc4a)
+++ uspace/lib/c/generic/device/clock_dev.c	(revision 9ba415e8ec4bc684d1ba8a424cc83de1a57c7aa9)
@@ -44,5 +44,5 @@
  * @param t        The current time that will be read from the device
  *
- * @return         EOK on success or a negative error code
+ * @return         EOK on success or an error code
  */
 int
@@ -75,5 +75,5 @@
  * @param t      The current time that will be written to the device
  *
- * @return       EOK on success or a negative error code
+ * @return       EOK on success or an error code
  */
 int
Index: uspace/lib/c/generic/devman.c
===================================================================
--- uspace/lib/c/generic/devman.c	(revision 0d0b3197a149bb5e5c53d21136df5b8c283cdc4a)
+++ uspace/lib/c/generic/devman.c	(revision 9ba415e8ec4bc684d1ba8a424cc83de1a57c7aa9)
@@ -210,5 +210,5 @@
  * @param funh      Place to store handle of the new function
  *
- * @return EOK on success or negative error code.
+ * @return EOK on success or an error code.
  *
  */
@@ -305,5 +305,5 @@
  * @param funh      Devman handle of the function
  *
- * @return EOK on success or negative error code.
+ * @return EOK on success or an error code.
  */
 int devman_remove_function(devman_handle_t funh)
@@ -529,5 +529,5 @@
  * @param data		Place to store pointer to array of handles
  * @param count		Place to store number of handles
- * @return 		EOK on success or negative error code
+ * @return 		EOK on success or an error code
  */
 static int devman_get_handles_internal(sysarg_t method, sysarg_t arg1,
Index: uspace/lib/c/generic/inet/tcp.c
===================================================================
--- uspace/lib/c/generic/inet/tcp.c	(revision 0d0b3197a149bb5e5c53d21136df5b8c283cdc4a)
+++ uspace/lib/c/generic/inet/tcp.c	(revision 9ba415e8ec4bc684d1ba8a424cc83de1a57c7aa9)
@@ -59,5 +59,5 @@
  *
  * @param tcp TCP service
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 static int tcp_callback_create(tcp_t *tcp)
@@ -205,5 +205,5 @@
  * @param rconn Place to store pointer to new connection
  *
- * @return EOK on success or negative error code.
+ * @return EOK on success or an error code.
  */
 int tcp_conn_create(tcp_t *tcp, inet_ep2_t *epp, tcp_cb_t *cb, void *arg,
@@ -316,5 +316,5 @@
  * @param rlst Place to store pointer to new listener
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 int tcp_listener_create(tcp_t *tcp, inet_ep_t *ep, tcp_listen_cb_t *lcb,
@@ -446,5 +446,5 @@
  * @param bytes Data size in bytes
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 int tcp_conn_send(tcp_conn_t *conn, const void *data, size_t bytes)
@@ -478,5 +478,5 @@
  *
  * @param conn Connection
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 int tcp_conn_send_fin(tcp_conn_t *conn)
@@ -494,5 +494,5 @@
  *
  * @param conn Connection
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 int tcp_conn_push(tcp_conn_t *conn)
@@ -510,5 +510,5 @@
  *
  * @param conn Connection
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 int tcp_conn_reset(tcp_conn_t *conn)
@@ -538,5 +538,5 @@
  *
  * @return EOK on success, EAGAIN if no received data is pending, or other
- *         negative error code in case of other error
+ *         error code in case of other error
  */
 int tcp_conn_recv(tcp_conn_t *conn, void *buf, size_t bsize, size_t *nrecv)
@@ -586,5 +586,5 @@
  * @param nrecv Place to store actual number of received bytes
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 int tcp_conn_recv_wait(tcp_conn_t *conn, void *buf, size_t bsize,
Index: uspace/lib/c/generic/inet/udp.c
===================================================================
--- uspace/lib/c/generic/inet/udp.c	(revision 0d0b3197a149bb5e5c53d21136df5b8c283cdc4a)
+++ uspace/lib/c/generic/inet/udp.c	(revision 9ba415e8ec4bc684d1ba8a424cc83de1a57c7aa9)
@@ -46,5 +46,5 @@
  *
  * @param udp UDP service
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 static int udp_callback_create(udp_t *udp)
@@ -158,5 +158,5 @@
  * @param rassoc Place to store pointer to new association
  *
- * @return EOK on success or negative error code.
+ * @return EOK on success or an error code.
  */
 int udp_assoc_create(udp_t *udp, inet_ep2_t *epp, udp_cb_t *cb, void *arg,
@@ -250,5 +250,5 @@
  * @param bytes Message size in bytes
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 int udp_assoc_send_msg(udp_assoc_t *assoc, inet_ep_t *dest, void *data,
@@ -316,5 +316,5 @@
  * @param bsize Buffer size
  *
- * @return EOK on success or negative error code.
+ * @return EOK on success or an error code.
  */
 int udp_rmsg_read(udp_rmsg_t *rmsg, size_t off, void *buf, size_t bsize)
@@ -380,5 +380,5 @@
  * @param rmsg Place to store message information
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 static int udp_rmsg_info(udp_t *udp, udp_rmsg_t *rmsg)
@@ -413,5 +413,5 @@
  *
  * @param udp UDP client
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 static int udp_rmsg_discard(udp_t *udp)
Index: uspace/lib/c/generic/inetcfg.c
===================================================================
--- uspace/lib/c/generic/inetcfg.c	(revision 0d0b3197a149bb5e5c53d21136df5b8c283cdc4a)
+++ uspace/lib/c/generic/inetcfg.c	(revision 9ba415e8ec4bc684d1ba8a424cc83de1a57c7aa9)
@@ -74,5 +74,5 @@
  * @param data		Place to store pointer to array of IDs
  * @param count		Place to store number of IDs
- * @return 		EOK on success or negative error code
+ * @return 		EOK on success or an error code
  */
 static int inetcfg_get_ids_internal(sysarg_t method, sysarg_t arg1,
Index: uspace/lib/c/generic/io/asprintf.c
===================================================================
--- uspace/lib/c/generic/io/asprintf.c	(revision 0d0b3197a149bb5e5c53d21136df5b8c283cdc4a)
+++ uspace/lib/c/generic/io/asprintf.c	(revision 9ba415e8ec4bc684d1ba8a424cc83de1a57c7aa9)
@@ -79,5 +79,5 @@
  * @args       Variable argument list
  *
- * @return Number of characters printed or a negative error code.
+ * @return Number of characters printed or an error code.
  *
  */
@@ -106,5 +106,5 @@
  * @fmt        Format string.
  *
- * @return Number of characters printed or a negative error code.
+ * @return Number of characters printed or an error code.
  *
  */
Index: uspace/lib/c/generic/ipc.c
===================================================================
--- uspace/lib/c/generic/ipc.c	(revision 0d0b3197a149bb5e5c53d21136df5b8c283cdc4a)
+++ uspace/lib/c/generic/ipc.c	(revision 9ba415e8ec4bc684d1ba8a424cc83de1a57c7aa9)
@@ -325,5 +325,5 @@
  * @param phandle  Handle of the phone to be hung up.
  *
- * @return  Zero on success or a negative error code.
+ * @return  Zero on success or an error code.
  *
  */
Index: uspace/lib/c/generic/loader.c
===================================================================
--- uspace/lib/c/generic/loader.c	(revision 0d0b3197a149bb5e5c53d21136df5b8c283cdc4a)
+++ uspace/lib/c/generic/loader.c	(revision 9ba415e8ec4bc684d1ba8a424cc83de1a57c7aa9)
@@ -84,5 +84,5 @@
  * @param task_id Points to a variable where the ID should be stored.
  *
- * @return Zero on success or negative error code.
+ * @return Zero on success or an error code.
  *
  */
@@ -113,5 +113,5 @@
  * @param ldr  Loader connection structure.
  *
- * @return Zero on success or negative error code.
+ * @return Zero on success or an error code.
  *
  */
@@ -151,5 +151,5 @@
  * @param file Program file.
  *
- * @return Zero on success or negative error code.
+ * @return Zero on success or an error code.
  *
  */
@@ -184,5 +184,5 @@
  * @param path Program path.
  *
- * @return Zero on success or negative error code.
+ * @return Zero on success or an error code.
  *
  */
@@ -217,5 +217,5 @@
  * @param argv NULL-terminated array of pointers to arguments.
  *
- * @return Zero on success or negative error code.
+ * @return Zero on success or an error code.
  *
  */
@@ -273,5 +273,5 @@
  * @param file       The file's descriptor.
  *
- * @return Zero on success or negative error code.
+ * @return Zero on success or an error code.
  *
  */
@@ -307,5 +307,5 @@
  * @param ldr Loader connection structure.
  *
- * @return Zero on success or negative error code.
+ * @return Zero on success or an error code.
  *
  */
@@ -330,5 +330,5 @@
  * @param ldr Loader connection structure.
  *
- * @return Zero on success or negative error code.
+ * @return Zero on success or an error code.
  *
  */
@@ -356,5 +356,5 @@
  * @param ldr Loader connection structure.
  *
- * @return Zero on success or negative error code.
+ * @return Zero on success or an error code.
  *
  */
Index: uspace/lib/c/generic/loc.c
===================================================================
--- uspace/lib/c/generic/loc.c	(revision 0d0b3197a149bb5e5c53d21136df5b8c283cdc4a)
+++ uspace/lib/c/generic/loc.c	(revision 9ba415e8ec4bc684d1ba8a424cc83de1a57c7aa9)
@@ -371,5 +371,5 @@
  * @param name		Place to store pointer to new string. Caller should
  *			free it using free().
- * @return		EOK on success or negative error code
+ * @return		EOK on success or an error code
  */
 static int loc_get_name_internal(sysarg_t method, sysarg_t id, char **name)
@@ -421,5 +421,5 @@
  * @param name		Place to store pointer to new string. Caller should
  *			free it using free().
- * @return		EOK on success or negative error code
+ * @return		EOK on success or an error code
  */
 int loc_category_get_name(category_id_t cat_id, char **name)
@@ -435,5 +435,5 @@
  * @param name		Place to store pointer to new string. Caller should
  *			free it using free().
- * @return		EOK on success or negative error code
+ * @return		EOK on success or an error code
  */
 int loc_service_get_name(service_id_t svc_id, char **name)
@@ -449,5 +449,5 @@
  * @param name		Place to store pointer to new string. Caller should
  *			free it using free().
- * @return		EOK on success or negative error code
+ * @return		EOK on success or an error code
  */
 int loc_service_get_server_name(service_id_t svc_id, char **name)
@@ -503,5 +503,5 @@
  * @param cat_id	Place to store ID
  * @param flags		IPC_FLAG_BLOCKING to wait for location service to start
- * @return		EOK on success or negative error code
+ * @return		EOK on success or an error code
  */
 int loc_category_get_id(const char *name, category_id_t *cat_id,
@@ -613,5 +613,5 @@
  * @param svc_id	Service ID
  * @param cat_id	Category ID
- * @return		EOK on success or negative error code
+ * @return		EOK on success or an error code
  */
 int loc_service_add_to_cat(service_id_t svc_id, service_id_t cat_id)
@@ -790,5 +790,5 @@
  * @param data		Place to store pointer to array of IDs
  * @param count		Place to store number of IDs
- * @return 		EOK on success or negative error code
+ * @return 		EOK on success or an error code
  */
 static int loc_get_ids_internal(sysarg_t method, sysarg_t arg1,
@@ -836,5 +836,5 @@
  * @param data		Place to store pointer to array of IDs
  * @param count		Place to store number of IDs
- * @return 		EOK on success or negative error code
+ * @return 		EOK on success or an error code
  */
 int loc_category_get_svcs(category_id_t cat_id, service_id_t **data,
@@ -851,5 +851,5 @@
  * @param data		Place to store pointer to array of IDs
  * @param count		Place to store number of IDs
- * @return 		EOK on success or negative error code
+ * @return 		EOK on success or an error code
  */
 int loc_get_categories(category_id_t **data, size_t *count)
Index: uspace/lib/c/generic/str.c
===================================================================
--- uspace/lib/c/generic/str.c	(revision 0d0b3197a149bb5e5c53d21136df5b8c283cdc4a)
+++ uspace/lib/c/generic/str.c	(revision 9ba415e8ec4bc684d1ba8a424cc83de1a57c7aa9)
@@ -918,5 +918,5 @@
  * @param src	Source utf16 string.
  *
- * @return EOK, if success, negative otherwise.
+ * @return EOK, if success, an error code otherwise.
  */
 int utf16_to_str(char *dest, size_t size, const uint16_t *src)
@@ -961,5 +961,5 @@
  * @param src	Source string.
  *
- * @return EOK, if success, negative otherwise.
+ * @return EOK, if success, an error code otherwise.
  */
 int str_to_utf16(uint16_t *dest, size_t dlen, const char *src)
Index: uspace/lib/c/generic/task.c
===================================================================
--- uspace/lib/c/generic/task.c	(revision 0d0b3197a149bb5e5c53d21136df5b8c283cdc4a)
+++ uspace/lib/c/generic/task.c	(revision 9ba415e8ec4bc684d1ba8a424cc83de1a57c7aa9)
@@ -69,5 +69,5 @@
  *             program.
  *
- * @return Zero on success or negative error code.
+ * @return Zero on success or an error code.
  */
 int task_set_name(const char *name)
@@ -82,5 +82,5 @@
  * @param task_id ID of task to kill.
  *
- * @return Zero on success or negative error code.
+ * @return Zero on success or an error code.
  */
 
@@ -101,5 +101,5 @@
  * @param argv Command-line arguments.
  *
- * @return Zero on success or negative error code.
+ * @return Zero on success or an error code.
  *
  */
@@ -143,5 +143,5 @@
  * @param std_err File to use as stderr.
  *
- * @return Zero on success or negative error code.
+ * @return Zero on success or an error code.
  *
  */
@@ -249,5 +249,5 @@
  * @param ap   Command-line arguments.
  *
- * @return Zero on success or negative error code.
+ * @return Zero on success or an error code.
  *
  */
@@ -287,5 +287,5 @@
  * @param ...  Command-line arguments.
  *
- * @return Zero on success or negative error code.
+ * @return Zero on success or an error code.
  *
  */
Index: uspace/lib/c/generic/time.c
===================================================================
--- uspace/lib/c/generic/time.c	(revision 0d0b3197a149bb5e5c53d21136df5b8c283cdc4a)
+++ uspace/lib/c/generic/time.c	(revision 9ba415e8ec4bc684d1ba8a424cc83de1a57c7aa9)
@@ -954,5 +954,5 @@
  * @param result Structure to store the result to
  *
- * @return EOK or a negative error code
+ * @return EOK or an error code
  *
  */
@@ -984,5 +984,5 @@
  *             ASCTIME_BUF_LEN bytes long.
  *
- * @return EOK or a negative error code.
+ * @return EOK or an error code.
  *
  */
@@ -1036,5 +1036,5 @@
  * @param result Structure to store the result to.
  *
- * @return EOK on success or a negative error code.
+ * @return EOK on success or an error code.
  *
  */
@@ -1066,5 +1066,5 @@
  * @param result Structure to store the result to.
  *
- * @return EOK on success or a negative error code.
+ * @return EOK on success or an error code.
  *
  */
@@ -1088,5 +1088,5 @@
  *              ASCTIME_BUF_LEN bytes long.
  *
- * @return EOK on success or a negative error code.
+ * @return EOK on success or an error code.
  *
  */
Index: uspace/lib/c/generic/uuid.c
===================================================================
--- uspace/lib/c/generic/uuid.c	(revision 0d0b3197a149bb5e5c53d21136df5b8c283cdc4a)
+++ uspace/lib/c/generic/uuid.c	(revision 9ba415e8ec4bc684d1ba8a424cc83de1a57c7aa9)
@@ -43,5 +43,5 @@
  *
  * @param uuid Place to store generated UUID
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 int uuid_generate(uuid_t *uuid)
@@ -100,5 +100,5 @@
  * @param endptr Place to store pointer to end of UUID or @c NULL
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 int uuid_parse(const char *str, uuid_t *uuid, const char **endptr)
Index: uspace/lib/c/generic/vbd.c
===================================================================
--- uspace/lib/c/generic/vbd.c	(revision 0d0b3197a149bb5e5c53d21136df5b8c283cdc4a)
+++ uspace/lib/c/generic/vbd.c	(revision 9ba415e8ec4bc684d1ba8a424cc83de1a57c7aa9)
@@ -95,5 +95,5 @@
  * @param count Place to store length of array (number of entries)
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 int vbd_get_disks(vbd_t *vbd, service_id_t **data, size_t *count)
@@ -165,5 +165,5 @@
  * @param act_size Place to store actual size of complete data.
  *
- * @return EOK on success or negative error code.
+ * @return EOK on success or an error code.
  */
 static int vbd_get_ids_once(vbd_t *vbd, sysarg_t method, sysarg_t arg1,
@@ -203,5 +203,5 @@
  * @param data   Place to store pointer to array of IDs
  * @param count  Place to store number of IDs
- * @return       EOK on success or negative error code
+ * @return       EOK on success or an error code
  */
 static int vbd_get_ids_internal(vbd_t *vbd, sysarg_t method, sysarg_t arg1,
@@ -247,5 +247,5 @@
  * @param count Place to store length of array (number of entries)
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 int vbd_label_get_parts(vbd_t *vbd, service_id_t disk,
@@ -332,5 +332,5 @@
  * @param ptype Place to store suggested partition type
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 int vbd_suggest_ptype(vbd_t *vbd, service_id_t disk, label_pcnt_t pcnt,
Index: uspace/lib/c/generic/vfs/vfs.c
===================================================================
--- uspace/lib/c/generic/vfs/vfs.c	(revision 0d0b3197a149bb5e5c53d21136df5b8c283cdc4a)
+++ uspace/lib/c/generic/vfs/vfs.c	(revision 9ba415e8ec4bc684d1ba8a424cc83de1a57c7aa9)
@@ -236,5 +236,5 @@
  *                      handle will be allocated from high indices
  *
- * @return              New file handle on success or a negative error code
+ * @return              New file handle on success or an error code
  */
 int vfs_clone(int file_from, int file_to, bool high, int *handle)
@@ -259,5 +259,5 @@
  * @param size          Size of @a buf
  *
- * @return              EOK on success or a non-negative error code
+ * @return              EOK on success or a non-error code
  */
 int vfs_cwd_get(char *buf, size_t size)
@@ -280,5 +280,5 @@
  * @param path  Path of the new working directory
  *
- * @return      EOK on success or a negative error code
+ * @return      EOK on success or an error code
  */
 int vfs_cwd_set(const char *path)
@@ -370,5 +370,5 @@
  * @param info    Place to store volume identification information
  *
- * @return                      EOK on success or a negative error code
+ * @return                      EOK on success or an error code
  */
 int vfs_fsprobe(const char *fs_name, service_id_t serv,
@@ -404,5 +404,5 @@
  *        fstypes->fstypes[0..]. To free the list use vfs_fstypes_free().
  *
- * @return                      EOK on success or a negative error code
+ * @return                      EOK on success or an error code
  */
 int vfs_fstypes(vfs_fstypes_t *fstypes)
@@ -499,5 +499,5 @@
  * @param[out] linkedfd If not NULL, will receive a file handle to the linked
  *                      child
- * @return              EOK on success or a negative error code
+ * @return              EOK on success or an error code
  */
 int vfs_link(int parent, const char *child, vfs_file_kind_t kind, int *linkedfd)
@@ -529,5 +529,5 @@
  * @param[out] linkedfd If not NULL, will receive a file handle to the linked
  *                      child
- * @return              EOK on success or a negative error code
+ * @return              EOK on success or an error code
  */
 int vfs_link_path(const char *path, vfs_file_kind_t kind, int *linkedfd)
@@ -585,5 +585,5 @@
  * @param[out] handle Pointer to variable where handle is to be written.
  *
- * @return      EOK on success or a negative error code
+ * @return      EOK on success or an error code
  */
 int vfs_lookup_open(const char *path, int flags, int mode, int *handle)
@@ -614,5 +614,5 @@
  * @param[out] mountedfd        File handle of the mounted root if not NULL
  *
- * @return                      EOK on success or a negative error code
+ * @return                      EOK on success or an error code
  */
 int vfs_mount(int mp, const char *fs_name, service_id_t serv, const char *opts,
@@ -658,5 +658,5 @@
  * @param[in] instance          Instance number of the file system server
  *
- * @return                      EOK on success or a negative error code
+ * @return                      EOK on success or an error code
  */
 int vfs_mount_path(const char *mp, const char *fs_name, const char *fqsn,
@@ -752,5 +752,5 @@
  * @param mode  Mode in which to open file in
  *
- * @return      EOK on success or a negative error code
+ * @return      EOK on success or an error code
  */
 int vfs_open(int file, int mode)
@@ -769,5 +769,5 @@
  * @param exch          Exchange to the acceptor
  *
- * @return              EOK on success or a negative error code
+ * @return              EOK on success or an error code
  */
 int vfs_pass_handle(async_exch_t *vfs_exch, int file, async_exch_t *exch)
@@ -781,5 +781,5 @@
  * @param file  File handle to put
  *
- * @return      EOK on success or a negative error code
+ * @return      EOK on success or an error code
  */
 int vfs_put(int file)
@@ -798,5 +798,5 @@
  * @param[out] handle  Received handle.
  *
- * @return       EOK on success or a negative error code
+ * @return       EOK on success or an error code
  */
 int vfs_receive_handle(bool high, int *handle)
@@ -877,5 +877,5 @@
  * @param[out] nread	Actual number of bytes read (0 or more)
  *
- * @return              EOK on success or a negative error code
+ * @return              EOK on success or an error code
  */
 int vfs_read_short(int file, aoff64_t pos, void *buf, size_t nbyte,
@@ -919,5 +919,5 @@
  * @param new   New path
  *
- * @return      EOK on success or a negative error code
+ * @return      EOK on success or an error code
  */
 int vfs_rename_path(const char *old, const char *new)
@@ -986,5 +986,5 @@
  * @param length        New length
  *
- * @return              EOK on success or a negative error code
+ * @return              EOK on success or an error code
  */
 int vfs_resize(int file, aoff64_t length)
@@ -1050,5 +1050,5 @@
  * @param[out] stat     Place to store file information
  *
- * @return              EOK on success or a negative error code
+ * @return              EOK on success or an error code
  */
 int vfs_stat(int file, struct stat *stat)
@@ -1084,5 +1084,5 @@
  * @param[out] stat     Place to store file information
  *
- * @return              EOK on success or a negative error code
+ * @return              EOK on success or an error code
  */
 int vfs_stat_path(const char *path, struct stat *stat)
@@ -1105,5 +1105,5 @@
  * @param[out] st       Buffer for storing information
  *
- * @return              EOK on success or a negative error code
+ * @return              EOK on success or an error code
  */
 int vfs_statfs(int file, struct statfs *st)
@@ -1130,5 +1130,5 @@
  * @param[out] st       Buffer for storing information
  *
- * @return              EOK on success or a negative error code
+ * @return              EOK on success or an error code
  */
 int vfs_statfs_path(const char *path, struct statfs *st)
@@ -1150,5 +1150,5 @@
  * @param file  File handle to synchronize
  *
- * @return      EOK on success or a negative error code
+ * @return      EOK on success or an error code
  */
 int vfs_sync(int file)
@@ -1172,5 +1172,5 @@
  * @param expect        File handle of the unlinked child
  *
- * @return              EOK on success or a negative error code
+ * @return              EOK on success or an error code
  */
 int vfs_unlink(int parent, const char *child, int expect)
@@ -1201,5 +1201,5 @@
  * @param path          Old path to be unlinked
  *
- * @return              EOK on success or a negative error code
+ * @return              EOK on success or an error code
  */
 int vfs_unlink_path(const char *path)
@@ -1230,5 +1230,5 @@
  * @param mp    File handle representing the mount-point
  *
- * @return      EOK on success or a negative error code
+ * @return      EOK on success or an error code
  */
 int vfs_unmount(int mp)
@@ -1244,5 +1244,5 @@
  * @param mpp   Mount-point path
  *
- * @return      EOK on success or a negative error code
+ * @return      EOK on success or an error code
  */
 int vfs_unmount_path(const char *mpp)
@@ -1341,5 +1341,5 @@
  * @param[out] nread    Actual number of bytes written (0 or more)
  *
- * @return              EOK on success or a negative error code
+ * @return              EOK on success or an error code
  */
 int vfs_write_short(int file, aoff64_t pos, const void *buf, size_t nbyte,
Index: uspace/lib/c/generic/vol.c
===================================================================
--- uspace/lib/c/generic/vol.c	(revision 0d0b3197a149bb5e5c53d21136df5b8c283cdc4a)
+++ uspace/lib/c/generic/vol.c	(revision 9ba415e8ec4bc684d1ba8a424cc83de1a57c7aa9)
@@ -101,5 +101,5 @@
  * @param act_size Place to store actual size of complete data.
  *
- * @return EOK on success or negative error code.
+ * @return EOK on success or an error code.
  */
 static int vol_get_ids_once(vol_t *vol, sysarg_t method, sysarg_t arg1,
@@ -139,5 +139,5 @@
  * @param data   Place to store pointer to array of IDs
  * @param count  Place to store number of IDs
- * @return       EOK on success or negative error code
+ * @return       EOK on success or an error code
  */
 static int vol_get_ids_internal(vol_t *vol, sysarg_t method, sysarg_t arg1,
@@ -183,5 +183,5 @@
  * @param count Place to store length of array (number of entries)
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 int vol_get_parts(vol_t *vol, service_id_t **data, size_t *count)