/*****************************************************************************
*Function name
* ltt_tracefile_open_header : based on ltt_tracefile_open but it stops
- * when it gets the header
- *Input params
+* when it gets the header
+ *Input params
* fileName : path to the tracefile
* tf : the tracefile (metadata_0) where the header will be read
*Return value
* ltt_subbuffer_header_t : the header containing the version number
****************************************************************************/
-static ltt_subbuffer_header_t * ltt_tracefile_open_header(gchar * fileName, LttTracefile *tf)
+static ltt_subbuffer_header_t * ltt_tracefile_open_header(gchar *fileName, LttTracefile *tf)
{
- struct stat lTDFStat; /* Trace data file status */
- ltt_subbuffer_header_t *header;
- int page_size = getpagesize();
+ struct stat lTDFStat; /* Trace data file status */
+ ltt_subbuffer_header_t *header;
+ int page_size = getpagesize();
+
+ /* open the file */
+ tf->long_name = g_quark_from_string(fileName);
+ tf->fd = open(fileName, O_RDONLY);
+ if(tf->fd < 0){
+ g_warning("Unable to open input data file %s\n", fileName);
+ goto end;
+ }
- //open the file
- tf->long_name = g_quark_from_string(fileName);
- tf->fd = open(fileName, O_RDONLY);
- tf->buf_index = NULL;
- if(tf->fd < 0){
- g_warning("Unable to open input data file %s\n", fileName);
- goto end;
- }
-
- // Get the file's status
- if(fstat(tf->fd, &lTDFStat) < 0){
- g_warning("Unable to get the status of the input data file %s\n", fileName);
- goto close_file;
- }
+ /* Get the file's status */
+ if(fstat(tf->fd, &lTDFStat) < 0){
+ g_warning("Unable to get the status of the input data file %s\n", fileName);
+ goto close_file;
+ }
- // Is the file large enough to contain a trace
- if(lTDFStat.st_size <
- (off_t)(ltt_subbuffer_header_size())){
- g_print("The input data file %s does not contain a trace\n", fileName);
- goto close_file;
- }
-
- /* Temporarily map the buffer start header to get trace information */
- /* Multiple of pages aligned head */
- tf->buffer.head = mmap(0,
- PAGE_ALIGN(ltt_subbuffer_header_size()), PROT_READ,
- MAP_PRIVATE, tf->fd, 0);
- if(tf->buffer.head == MAP_FAILED) {
- perror("Error in allocating memory for buffer of tracefile");
- goto close_file;
- }
- g_assert( ( (gulong)tf->buffer.head&(8-1) ) == 0); // make sure it's aligned.
-
- header = (ltt_subbuffer_header_t *)tf->buffer.head;
-
-
- return header;
+ /* Is the file large enough to contain a trace */
+ if(lTDFStat.st_size < (off_t)(ltt_subbuffer_header_size())) {
+ g_print("The input data file %s does not contain a trace\n", fileName);
+ goto close_file;
+ }
- /* Error */
+ /* Temporarily map the buffer start header to get trace information */
+ /* Multiple of pages aligned head */
+ tf->buffer.head = mmap(0,PAGE_ALIGN(ltt_subbuffer_header_size()), PROT_READ, MAP_PRIVATE, tf->fd, 0);
-close_file:
- close(tf->fd);
-end:
- if (tf->buf_index)
- g_array_free(tf->buf_index, TRUE);
- return 0;
+ if(tf->buffer.head == MAP_FAILED) {
+ perror("Error in allocating memory for buffer of tracefile");
+ goto close_file;
+ }
+ g_assert( ( (gulong)tf->buffer.head&(8-1) ) == 0); // make sure it's aligned.
+
+ header = (ltt_subbuffer_header_t *)tf->buffer.head;
+
+ return header;
+
+ close_file:
+ close(tf->fd);
+ end:
+ return 0;
}
/*****************************************************************************
*Function name
* get_version : get the trace version from a metadata_0 trace file
- *Input params
+ *Input params
* pathname : path to the trace
* version_number : the struct that will get the version number
*Return value
* int : 1 if succeed, -1 if error
****************************************************************************/
-
-int get_version(const gchar *pathname, struct LttTraceVersion * version_number)
+int ltt_get_trace_version(const gchar *pathname, struct LttTraceVersion *version_number)
{
gchar abs_path[PATH_MAX];
int ret = 0;
struct dirent *entry;
struct stat stat_buf;
gchar path[PATH_MAX];
-
+
LttTracefile tmp_tf;
LttTrace * t;
ltt_subbuffer_header_t *header;
-
+
t = g_new(LttTrace, 1);
-
+
get_absolute_pathname(pathname, abs_path);
/* Test to see if it looks like a trace */
dir = opendir(abs_path);
-
+
if(dir == NULL) {
perror(abs_path);
goto open_error;
}
-
+
while((entry = readdir(dir)) != NULL) {
strcpy(path, abs_path);
strcat(path, "/");
continue;
}
}
-
- closedir(dir);
+
+ closedir(dir);
dir = opendir(abs_path);
while((entry = readdir(dir)) != NULL) {
-
if(entry->d_name[0] == '.') continue;
if(g_strcmp0(entry->d_name, "metadata_0") != 0) continue;
-
+
strcpy(path, abs_path);
strcat(path, "/");
strcat(path, entry->d_name);
perror(path);
continue;
}
-
- header = ltt_tracefile_open_header(path, &tmp_tf);
-
+
+ header = ltt_tracefile_open_header(path, &tmp_tf);
+
if(header == NULL) {
g_info("Error getting the header %s", path);
-
continue; /* error opening the tracefile : bad magic number ? */
}
-
- version_number->ltt_major_version = header->major_version;
- version_number->ltt_minor_version = header->minor_version;
-
+
+ version_number->ltt_major_version = header->major_version;
+ version_number->ltt_minor_version = header->minor_version;
}
-
+
return 0;
-
+
open_error:
- g_free(t);
- return -1;
-}
+ g_free(t);
+ return -1;
+}
projects / lttv.git / blobdiff