Hello,
here my first proposal for LinuxPPS implemented with new specific
syscalls.
I'd like some comments before sending a "definitive" patch. :)
Rodolfo
--
GNU/Linux Solutions e-mail: [email protected]
Linux Device Driver [email protected]
Embedded Systems [email protected]
UNIX programming phone: +39 349 2432127
diff --git a/arch/i386/kernel/syscall_table.S b/arch/i386/kernel/syscall_table.S
index 0772678..63c5fc1 100644
--- a/arch/i386/kernel/syscall_table.S
+++ b/arch/i386/kernel/syscall_table.S
@@ -320,3 +320,8 @@ ENTRY(sys_call_table)
.long sys_getcpu
.long sys_epoll_pwait
.long sys_utimensat /* 320 */
+ .long sys_time_pps_find
+ .long sys_time_pps_getparams
+ .long sys_time_pps_setparams
+ .long sys_time_pps_getcap
+ .long sys_time_pps_fetch /* 325 */
diff --git a/drivers/pps/Kconfig b/drivers/pps/Kconfig
index 54297e8..0f5c784 100644
--- a/drivers/pps/Kconfig
+++ b/drivers/pps/Kconfig
@@ -5,7 +5,7 @@
menu "PPS support"
config PPS
- tristate "PPS support"
+ bool "PPS support"
depends on EXPERIMENTAL
---help---
PPS (Pulse Per Second) is a special pulse provided by some GPS
diff --git a/drivers/pps/clients/Kconfig b/drivers/pps/clients/Kconfig
index a87cd37..867df3a 100644
--- a/drivers/pps/clients/Kconfig
+++ b/drivers/pps/clients/Kconfig
@@ -15,22 +15,14 @@ config PPS_CLIENT_KTIMER
This driver can also be built as a module. If so, the module
will be called ktimer.o.
-comment "UART serial support (forced off)"
- depends on ! (SERIAL_CORE != n && !(PPS = m && SERIAL_CORE = y))
-
config PPS_CLIENT_UART
bool "UART serial support"
- depends on SERIAL_CORE != n && !(PPS = m && SERIAL_CORE = y)
help
If you say yes here you get support for a PPS source connected
with the CD (Carrier Detect) pin of your serial port.
-comment "Parallel printer support (forced off)"
- depends on !( PRINTER != n && !(PPS = m && PRINTER = y))
-
config PPS_CLIENT_LP
bool "Parallel printer support"
- depends on PRINTER != n && !(PPS = m && PRINTER = y)
help
If you say yes here you get support for a PPS source connected
with the interrupt pin of your parallel port.
diff --git a/drivers/pps/kapi.c b/drivers/pps/kapi.c
index 098f329..dd24c31 100644
--- a/drivers/pps/kapi.c
+++ b/drivers/pps/kapi.c
@@ -23,6 +23,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
+#include <linux/sched.h>
#include <linux/time.h>
#include <linux/pps.h>
@@ -146,7 +147,7 @@ void pps_unregister_source(struct pps_source_info_s *info)
pps_sysfs_remove_source_entry(info);
if (mutex_lock_interruptible(&pps_mutex))
- return -EINTR;
+ return;
__pps_unregister_source(info);
mutex_unlock(&pps_mutex);
}
diff --git a/drivers/pps/pps.c b/drivers/pps/pps.c
index 71adf0c..2dd45ed 100644
--- a/drivers/pps/pps.c
+++ b/drivers/pps/pps.c
@@ -24,9 +24,10 @@
#include <linux/version.h>
#include <linux/module.h>
#include <linux/init.h>
-#include <linux/skbuff.h>
-
+#include <linux/linkage.h>
+#include <linux/sched.h>
#include <linux/pps.h>
+#include <asm/uaccess.h>
/*
* Global variables
@@ -40,12 +41,6 @@ struct pps_source_info_s dummy_info; /* Dummy PPS info for unallocated
PPS sources */
/*
- * Local variables
- */
-
-static struct sock *nl_sk = NULL;
-
-/*
* Misc functions
*/
@@ -94,236 +89,285 @@ static int pps_find_path(char *path)
}
/*
- * Input function
+ * PPS System Calls
*/
-static void pps_nl_data_ready(struct sock *sk, int len)
+static long __sys_time_pps_find(int cmd, int __user *source,
+ char __user *name, int namelen, char __user *path, int pathlen)
{
- struct sk_buff *skb;
- struct nlmsghdr *nlh;
- struct pps_netlink_msg *nlpps;
- int cmd, source, id;
- unsigned long timeout;
- int ret;
+ switch (cmd) {
+ case PPS_FIND_SRC :
+ /* Sanity checks */
+ if (!source)
+ return -EINVAL;
- while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
- nlh = (struct nlmsghdr *) skb->data;
- pps_dbg("New message from PID %d (flags %x)",
- nlh->nlmsg_pid, nlh->nlmsg_flags);
-
- /* Decode the userland command */
- nlpps = (struct pps_netlink_msg*) NLMSG_DATA(nlh);
- cmd = nlpps->cmd;
- source = nlpps->source;
-
- switch (cmd) {
- case PPS_CREATE:
- pps_dbg("PPS_CREATE: source %d", source);
-
- /* Check if the requested source is allocated */
- ret = pps_find_source(source);
- if (ret < 0) {
- nlpps->ret = ret;
- break;
- }
+ pps_dbg("PPS_FIND_SRC: source %d", *source);
- nlpps->source = ret;
- nlpps->ret = 0;
+ *source = pps_find_source(*source);
+ if (*source < 0) {
+ pps_dbg("no PPS devices found");
+ return -ENODEV;
break;
+ }
+
+ break;
- case PPS_DESTROY:
- pps_dbg("PPS_DESTROY: source %d", source);
+ case PPS_FIND_PATH :
+ pps_dbg("PPS_FIND_PATH: path %s", path);
+
+ /* Sanity checks */
+ if (!path)
+ return -EINVAL;
- /* Nothing to do here! Just answer ok... */
- nlpps->ret = 0;
+ *source = pps_find_path(path);
+ if (*source < 0) {
+ pps_dbg("no PPS devices found");
+ return -ENODEV;
break;
+ }
- case PPS_SETPARMS:
- pps_dbg("PPS_SETPARMS: source %d", source);
+ break;
- /* Check the capabilities */
- if (!capable(CAP_SYS_TIME)) {
- nlpps->ret = -EPERM;
- break;
- }
+ default :
+ pps_err("invalid sys_pps_cmd %d", cmd);
+ return -EOPNOTSUPP;
+ }
- /* Sanity checks */
- ret = pps_check_source(source);
- if (ret < 0) {
- nlpps->ret = ret;
- break;
- }
- if ((nlpps->params.mode & ~pps_source[source].info->mode) != 0) {
- pps_dbg("unsupported capabilities");
- nlpps->ret = -EINVAL;
- break;
- }
- if ((nlpps->params.mode & (PPS_CAPTUREASSERT|PPS_CAPTURECLEAR)) == 0) {
- pps_dbg("capture mode unspecified");
- nlpps->ret = -EINVAL;
- break;
- }
- if ((nlpps->params.mode & (PPS_TSFMT_TSPEC|PPS_TSFMT_NTPFP)) == 0) {
- /* section 3.3 of RFC 2783 interpreted */
- pps_dbg("time format unspecified");
- nlpps->params.mode |= PPS_TSFMT_TSPEC;
- }
+ /* Found! So copy the info */
+ if (name)
+ strncpy(name, pps_source[*source].info->name,
+ min(PPS_MAX_NAME_LEN, namelen));
+ if (path)
+ strncpy(path, pps_source[*source].info->path,
+ min(PPS_MAX_NAME_LEN, pathlen));
- /* Save the new parameters */
- pps_source[source].params = nlpps->params;
+ return 0;
+}
- /* Restore the read only parameters */
- if (pps_source[source].info->mode&PPS_CANWAIT)
- pps_source[source].params.mode |= PPS_CANWAIT;
- pps_source[source].params.api_version = PPS_API_VERS;
+asmlinkage long sys_time_pps_find(int cmd, int __user *source,
+ char __user *name, int namelen, char __user *path, int pathlen)
+{
+ int ret;
- nlpps->ret = 0;
- break;
+ pps_dbg("%s: cmd %d", __FUNCTION__, cmd);
- case PPS_GETPARMS:
- pps_dbg("PPS_GETPARMS: source %d", source);
+ /* Sanity checks */
+ if (!access_ok(VERIFY_READ | VERIFY_WRITE, source, sizeof(int)))
+ return -EFAULT;
+ if (!access_ok(VERIFY_READ | VERIFY_WRITE, name, namelen))
+ return -EFAULT;
+ if (!access_ok(VERIFY_READ | VERIFY_WRITE, path, pathlen))
+ return -EFAULT;
- /* Sanity checks */
- ret = pps_check_source(source);
- if (ret < 0) {
- nlpps->ret = ret;
- break;
- }
+ if (mutex_lock_interruptible(&pps_mutex))
+ return -EINTR;
+ ret = __sys_time_pps_find(cmd, source, name, namelen, path, pathlen);
+ mutex_unlock(&pps_mutex);
- nlpps->params = pps_source[source].params;
- nlpps->ret = 0;
- break;
+ return ret;
+}
- case PPS_GETCAP:
- pps_dbg("PPS_GETCAP: source %d", source);
+static long __sys_time_pps_getparams(int source,
+ struct pps_params __user *params)
+{
+ int ret;
- /* Sanity checks */
- ret = pps_check_source(source);
- if (ret < 0) {
- nlpps->ret = ret;
- break;
- }
+ ret = pps_check_source(source);
+ if (ret < 0)
+ return -ENODEV;
- nlpps->mode = pps_source[source].info->mode;
- nlpps->ret = 0;
- break;
+ *params = pps_source[source].params;
- case PPS_FETCH:
- pps_dbg("PPS_FETCH: source %d", source);
+ return 0;
+}
- /* Sanity checks */
- ret = pps_check_source(source);
- if (ret < 0) {
- nlpps->ret = ret;
- break;
- }
- if (nlpps->tsformat != PPS_TSFMT_TSPEC) {
- pps_dbg("unsupported time format");
- nlpps->ret = -EINVAL;
- break;
- }
-
- pps_source[source].go = 0;
-
- /* Manage the timeout */
- if (nlpps->timeout.tv_sec != -1) {
- timeout = nlpps->timeout.tv_sec * HZ;
- timeout += nlpps->timeout.tv_nsec/
- (NSEC_PER_SEC/HZ);
- pps_dbg("timeout %ld.%09ld",
- nlpps->timeout.tv_sec,
- nlpps->timeout.tv_nsec);
-
- if (timeout != 0) {
- ret = wait_event_interruptible_timeout(
- pps_source[source].queue,
- pps_source[source].go, timeout);
- if (ret == 0) {
- pps_dbg("timeout expired");
- nlpps->ret = -ETIMEDOUT;
- break;
- }
- }
- } else
- ret = wait_event_interruptible(
- pps_source[source].queue,
- pps_source[source].go);
-
- /* Check for pending signals */
- if (ret == -ERESTARTSYS) {
- pps_dbg("pending signal caught");
- nlpps->ret = -EINTR;
- break;
- }
+asmlinkage long sys_time_pps_getparams(int source,
+ struct pps_params __user *params)
+{
+ int ret;
- /* Return the fetched timestamp */
- nlpps->info.assert_sequence = pps_source[source].assert_sequence;
- nlpps->info.clear_sequence = pps_source[source].clear_sequence;
- nlpps->info.assert_tu = pps_source[source].assert_tu;
- nlpps->info.clear_tu = pps_source[source].clear_tu;
- nlpps->info.current_mode = pps_source[source].current_mode;
+ pps_dbg("%s: source %d", __FUNCTION__, source);
- nlpps->ret = 0;
- break;
+ /* Sanity checks */
+ if (!params)
+ return -EINVAL;
+ if (!access_ok(VERIFY_WRITE, params, sizeof(struct pps_params)))
+ return -EFAULT;
- case PPS_KC_BIND:
- pps_dbg("PPS_KC_BIND: source %d", source);
- /* Feature currently not supported */
- nlpps->ret = -EOPNOTSUPP;
- break;
+ if (mutex_lock_interruptible(&pps_mutex))
+ return -EINTR;
+ ret = __sys_time_pps_getparams(source, params);
+ mutex_unlock(&pps_mutex);
- case PPS_FIND_SRC:
- pps_dbg("PPS_FIND_SRC: source %d", source);
- source = pps_find_source(source);
- if (source < 0) {
- pps_dbg("no PPS devices found");
- nlpps->ret = -ENODEV;
- break;
- }
-
- /* Found! So copy the info */
- nlpps->source = source;
- strncpy(nlpps->name, pps_source[source].info->name,
- PPS_MAX_NAME_LEN);
- strncpy(nlpps->path, pps_source[source].info->path,
- PPS_MAX_NAME_LEN);
- nlpps->ret = 0;
- break;
+ return ret;
+}
- case PPS_FIND_PATH:
- pps_dbg("PPS_FIND_PATH: source %s", nlpps->path);
- source = pps_find_path(nlpps->path);
- if (source < 0) {
- pps_dbg("no PPS devices found");
- nlpps->ret = -ENODEV;
- break;
- }
-
- /* Found! So copy the info */
- nlpps->source = source;
- strncpy(nlpps->name, pps_source[source].info->name,
- PPS_MAX_NAME_LEN);
- strncpy(nlpps->path, pps_source[source].info->path,
- PPS_MAX_NAME_LEN);
- nlpps->ret = 0;
- break;
+static long __sys_time_pps_setparams(int source,
+ const struct pps_params __user *params)
+{
+ int ret;
- default:
- /* Unknow command */
- pps_dbg("unknow command %d", nlpps->cmd);
+ ret = pps_check_source(source);
+ if (ret < 0)
+ return -ENODEV;
- nlpps->ret = -EINVAL;
- }
+ /* Save the new parameters */
+ pps_source[source].params = *params;
- /* Send an answer to the userland */
- id = NETLINK_CB(skb).pid;
- pps_dbg("start sending reply to ID %d...", id);
- NETLINK_CB(skb).pid = 0; /* from the kernel */
- NETLINK_CB(skb).dst_group = 0; /* not in mcast groups */
+ /* Restore the read only parameters */
+ if ((params->mode & (PPS_TSFMT_TSPEC | PPS_TSFMT_NTPFP)) == 0) {
+ /* section 3.3 of RFC 2783 interpreted */
+ pps_dbg("time format unspecified");
+ pps_source[source].params.mode |= PPS_TSFMT_TSPEC;
+ }
+ if (pps_source[source].info->mode & PPS_CANWAIT)
+ pps_source[source].params.mode |= PPS_CANWAIT;
+ pps_source[source].params.api_version = PPS_API_VERS;
- ret = netlink_unicast(nl_sk, skb, id, MSG_DONTWAIT);
- pps_dbg("... reply sent (%d)", ret);
+ return 0;
+}
+
+asmlinkage long sys_time_pps_setparams(int source,
+ const struct pps_params __user *params)
+{
+ int ret;
+
+ pps_dbg("%s: source %d", __FUNCTION__, source);
+
+ /* Check the capabilities */
+ if (!capable(CAP_SYS_TIME))
+ return -EPERM;
+
+ /* Sanity checks */
+ if (!params)
+ return -EINVAL;
+ if (!access_ok(VERIFY_READ, params, sizeof(struct pps_params)))
+ return -EFAULT;
+ if ((params->mode & ~pps_source[source].info->mode) != 0) {
+ pps_dbg("unsupported capabilities");
+ return -EINVAL;
+ }
+ if ((params->mode & (PPS_CAPTUREASSERT | PPS_CAPTURECLEAR)) == 0) {
+ pps_dbg("capture mode unspecified");
+ return -EINVAL;
+ }
+
+ if (mutex_lock_interruptible(&pps_mutex))
+ return -EINTR;
+ ret = __sys_time_pps_setparams(source, params);
+ mutex_unlock(&pps_mutex);
+
+ return ret;
+}
+
+static long __sys_time_pps_getcap(int source, int __user *mode)
+{
+ int ret;
+
+ ret = pps_check_source(source);
+ if (ret < 0)
+ return -ENODEV;
+
+ *mode = pps_source[source].info->mode;
+
+ return 0;
+}
+
+asmlinkage long sys_time_pps_getcap(int source, int __user *mode)
+{
+ int ret;
+
+ pps_dbg("%s: source %d", __FUNCTION__, source);
+
+ /* Sanity checks */
+ if (!mode)
+ return -EINVAL;
+ if (!access_ok(VERIFY_WRITE, mode, sizeof(int)))
+ return -EFAULT;
+
+ if (mutex_lock_interruptible(&pps_mutex))
+ return -EINTR;
+ ret = __sys_time_pps_getcap(source, mode);
+ mutex_unlock(&pps_mutex);
+
+ return ret;
+}
+
+static long __sys_time_pps_fetch(int source, const int tsformat,
+ struct pps_info __user *info,
+ const struct timespec __user *timeout)
+{
+ unsigned long ticks;
+ int ret;
+
+ ret = pps_check_source(source);
+ if (ret < 0)
+ return -ENODEV;
+
+ pps_source[source].go = 0;
+
+ /* Manage the timeout */
+ if (timeout || timeout->tv_sec != -1) {
+ if (!access_ok(VERIFY_READ, timeout, sizeof(struct timespec)))
+ return -EFAULT;
+
+ pps_dbg("timeout %ld.%09ld", timeout->tv_sec, timeout->tv_nsec);
+ ticks = timeout->tv_sec * HZ;
+ ticks += timeout->tv_nsec/ (NSEC_PER_SEC / HZ);
+
+ if (ticks != 0) {
+ ret = wait_event_interruptible_timeout(
+ pps_source[source].queue,
+ pps_source[source].go, ticks);
+ if (ret == 0) {
+ pps_dbg("timeout expired");
+ return -ETIMEDOUT;
+ }
+ }
+ } else
+ ret = wait_event_interruptible( pps_source[source].queue,
+ pps_source[source].go);
+
+ /* Check for pending signals */
+ if (ret == -ERESTARTSYS) {
+ pps_dbg("pending signal caught");
+ return -EINTR;
}
+
+ /* Return the fetched timestamp */
+ info->assert_sequence = pps_source[source].assert_sequence;
+ info->clear_sequence = pps_source[source].clear_sequence;
+ info->assert_tu = pps_source[source].assert_tu;
+ info->clear_tu = pps_source[source].clear_tu;
+ info->current_mode = pps_source[source].current_mode;
+
+ return 0;
+}
+
+asmlinkage long sys_time_pps_fetch(int source, const int tsformat,
+ struct pps_info __user *info,
+ const struct timespec __user *timeout)
+{
+ int ret;
+
+ pps_dbg("%s: source %d", __FUNCTION__, source);
+
+ /* Sanity checks */
+ if (tsformat != PPS_TSFMT_TSPEC) {
+ pps_dbg("unsupported time format");
+ return -EINVAL;
+ }
+ if (!info)
+ return -EINVAL;
+ if (!access_ok(VERIFY_WRITE, info, sizeof(struct pps_info)))
+ return -EFAULT;
+
+ if (mutex_lock_interruptible(&pps_mutex))
+ return -EINTR;
+ ret = __sys_time_pps_fetch(source, tsformat, info, timeout);
+ mutex_unlock(&pps_mutex);
+
+ return ret;
}
/*
@@ -333,7 +377,6 @@ static void pps_nl_data_ready(struct sock *sk, int len)
static void __exit pps_exit(void)
{
pps_sysfs_unregister();
- sock_release(nl_sk->sk_socket);
pps_info("LinuxPPS API ver. %d removed", PPS_API_VERS);
}
@@ -342,14 +385,6 @@ static int __init pps_init(void)
{
int i, ret;
- nl_sk = netlink_kernel_create(NETLINK_PPSAPI, 0,
- pps_nl_data_ready, NULL, THIS_MODULE);
- if (nl_sk == NULL) {
- pps_err("unable to create netlink kernel socket");
- return -EBUSY;
- }
- pps_dbg("netlink protocol %d created", NETLINK_PPSAPI);
-
/* Init pps_source info */
dummy_info.echo = dummy_echo;
for (i = 0; i < PPS_MAX_SOURCES; i++) {
@@ -361,7 +396,7 @@ static int __init pps_init(void)
ret = pps_sysfs_register();
if (ret < 0) {
pps_err("unable to register sysfs");
- goto pps_sysfs_register_error;
+ return ret;
}
pps_info("LinuxPPS API ver. %d registered", PPS_API_VERS);
@@ -369,12 +404,6 @@ static int __init pps_init(void)
"<[email protected]>", PPS_VERSION);
return 0;
-
-pps_sysfs_register_error:
-
- sock_release(nl_sk->sk_socket);
-
- return ret;
}
subsys_initcall(pps_init);
diff --git a/include/asm-i386/unistd.h b/include/asm-i386/unistd.h
index bd21e79..d84b679 100644
--- a/include/asm-i386/unistd.h
+++ b/include/asm-i386/unistd.h
@@ -326,10 +326,15 @@
#define __NR_getcpu 318
#define __NR_epoll_pwait 319
#define __NR_utimensat 320
+#define __NR_time_pps_find 321
+#define __NR_time_pps_getparams 322
+#define __NR_time_pps_setparams 323
+#define __NR_time_pps_getcap 324
+#define __NR_time_pps_fetch 325
#ifdef __KERNEL__
-#define NR_syscalls 321
+#define NR_syscalls 326
#define __ARCH_WANT_IPC_PARSE_VERSION
#define __ARCH_WANT_OLD_READDIR
diff --git a/include/linux/pps.h b/include/linux/pps.h
index 7b66881..c3b5209 100644
--- a/include/linux/pps.h
+++ b/include/linux/pps.h
@@ -33,10 +33,8 @@
#ifndef __KERNEL__
#include <asm/types.h>
-#include <sys/socket.h>
#include <sys/time.h>
#endif
-#include <linux/netlink.h>
#define PPS_API_VERS_2 2 /* LinuxPPS proposal, dated 2006-05 */
#define PPS_API_VERS PPS_API_VERS_2
@@ -107,35 +105,12 @@ struct pps_params {
* Here begins the implementation-specific part!
*/
-struct pps_netlink_msg {
- int cmd; /* the command to execute */
- int source;
- char name[PPS_MAX_NAME_LEN]; /* symbolic name */
- char path[PPS_MAX_NAME_LEN]; /* path of the connected device */
- int consumer; /* selected kernel consumer */
- struct pps_params params;
- int mode; /* edge */
- int tsformat; /* format of time stamps */
- struct pps_info info;
- struct timespec timeout;
- int ret;
-};
-#define PPSAPI_MAX_PAYLOAD sizeof(struct pps_netlink_msg)
-
-#define PPS_CREATE 1
-#define PPS_DESTROY 2
-#define PPS_SETPARMS 3
-#define PPS_GETPARMS 4
-#define PPS_GETCAP 5
-#define PPS_FETCH 6
-#define PPS_KC_BIND 7
-#define PPS_FIND_SRC 8
-#define PPS_FIND_PATH 9
+#define PPS_FIND_SRC 1
+#define PPS_FIND_PATH 2
#ifdef __KERNEL__
-#include <linux/socket.h>
-#include <net/sock.h>
+#include <linux/device.h>
/*
* Misc macros
@@ -225,4 +200,12 @@ extern void pps_sysfs_unregister(void);
#endif /* __KERNEL__ */
+struct pps_findsource_s {
+ int *source;
+ char *name;
+ int namelen;
+ char *path;
+ int pathlen;
+}
+
#endif /* _PPS_H_ */
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 3139f44..e894540 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -65,6 +65,7 @@ struct getcpu_cache;
#include <asm/signal.h>
#include <linux/quota.h>
#include <linux/key.h>
+#include <linux/pps.h>
asmlinkage long sys_time(time_t __user *tloc);
asmlinkage long sys_stime(time_t __user *tptr);
@@ -605,6 +606,18 @@ asmlinkage long sys_set_robust_list(struct robust_list_head __user *head,
size_t len);
asmlinkage long sys_getcpu(unsigned __user *cpu, unsigned __user *node, struct getcpu_cache __user *cache);
+asmlinkage long sys_time_pps_find(int cmd, int __user *source,
+ char __user *name, int namelen,
+ char __user *path, int pathlen);
+asmlinkage long sys_time_pps_getparams(int source,
+ struct pps_params __user *params);
+asmlinkage long sys_time_pps_setparams(int source,
+ const struct pps_params __user *params);
+asmlinkage long sys_time_pps_getcap(int source, int __user *mode);
+asmlinkage long sys_time_pps_fetch(int source, const int tsformat,
+ struct pps_info __user *info,
+ const struct timespec __user *timeout);
+
int kernel_execve(const char *filename, char *const argv[], char *const envp[]);
#endif
diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c
index d7306d0..2bbd244 100644
--- a/kernel/sys_ni.c
+++ b/kernel/sys_ni.c
@@ -141,3 +141,10 @@ cond_syscall(compat_sys_migrate_pages);
cond_syscall(sys_bdflush);
cond_syscall(sys_ioprio_set);
cond_syscall(sys_ioprio_get);
+
+/* PPS dependent */
+cond_syscall(sys_time_pps_find);
+cond_syscall(sys_time_pps_getparams);
+cond_syscall(sys_time_pps_setparams);
+cond_syscall(sys_time_pps_getcap);
+cond_syscall(sys_time_pps_fetch);
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