X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=trunk%2Fltt-control%2Flttd%2Flttd.c;h=f21c411eb8940de479fb62980917c6880fae7e99;hb=42e99028d61b9ebf5d2a250fc99db0ec4941204a;hp=06af633741a319c6a13c410c2198bcfe9d98860c;hpb=083518b76f0614dc43b6a2fa06cc4ff337deb1f7;p=ltt-control.git

diff --git a/trunk/ltt-control/lttd/lttd.c b/trunk/ltt-control/lttd/lttd.c
index 06af633..f21c411 100644
--- a/trunk/ltt-control/lttd/lttd.c
+++ b/trunk/ltt-control/lttd/lttd.c
@@ -51,7 +51,8 @@
 #define RELAY_GET_SUBBUF_SIZE   _IOR(0xF5, 0x03,__u32)
 
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14)
-#include <linux/inotify.h>
+#include <sys/inotify.h>
+#if 0	/* should now be provided by libc. */
 /* From the inotify-tools 2.6 package */
 static inline int inotify_init (void)
 {
@@ -67,6 +68,7 @@ static inline int inotify_rm_watch (int fd, __u32 wd)
 {
 	return syscall (__NR_inotify_rm_watch, fd, wd);
 }
+#endif //0
 #define HAS_INOTIFY
 #else
 static inline int inotify_init (void)
@@ -314,12 +316,16 @@ int open_buffer_file(char *filename, char *path_channel, char *path_trace,
 				path_trace);
 
 			fd_pairs->pair[fd_pairs->num_pairs-1].trace = 
-				open(path_trace, O_WRONLY|O_APPEND,
+				open(path_trace, O_WRONLY,
 						S_IRWXU|S_IRWXG|S_IRWXO);
-
 			if(fd_pairs->pair[fd_pairs->num_pairs-1].trace == -1) {
 				perror(path_trace);
 			}
+			ret = lseek(fd_pairs->pair[fd_pairs->num_pairs-1].trace,
+				    0, SEEK_END);
+			if (ret < 0) {
+				perror(path_trace);
+			}
 		} else {
 			printf("File %s exists, cannot open. Try append mode.\n", path_trace);
 			open_ret = -1;
@@ -437,7 +443,8 @@ int read_subbuffer(struct fd_pair *pair)
 	unsigned int consumed_old;
 	int err;
 	long ret;
-	unsigned long len, offset;
+	unsigned long len;
+	off_t offset;
 
 
 	err = ioctl(pair->channel, RELAY_GET_SUBBUF, &consumed_old);
@@ -462,7 +469,8 @@ int read_subbuffer(struct fd_pair *pair)
 	len = pair->subbuf_size;
 	offset = 0;
 	while (len > 0) {
-		printf_verbose("splice chan to pipe offset %lu\n", offset);
+		printf_verbose("splice chan to pipe offset %lu\n",
+			(unsigned long)offset);
 		ret = splice(pair->channel, &offset, thread_pipe[1], NULL,
 			len, SPLICE_F_MOVE);
 		printf_verbose("splice chan to pipe ret %ld\n", ret);
@@ -916,7 +924,11 @@ int channels_init()
 	if(ret = open_channel_trace_pairs(channel_name, trace_name, &fd_pairs,
 			&inotify_fd, &inotify_watch_array))
 		goto close_channel;
-
+	if (fd_pairs.num_pairs == 0) {
+		printf("No channel available for reading, exiting\n");
+		ret = -ENOENT;
+		goto close_channel;
+	}
 	if(ret = map_channels(&fd_pairs, 0, fd_pairs.num_pairs))
 		goto close_channel;
 	return 0;