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sdlog2: no new sessXXX folder on every arm (#4775)

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Previously, if no time was set, sdlog2 created a folder like sess001,
sess002 for every logfile. The logfiles would then always be named
log001.px4log and their numbering would not actually increase.

This is now fixed and a new folder is only created per boot.
This commit is contained in:
Julian Oes 2016-06-10 07:48:37 +01:00 committed by Lorenz Meier
parent 0a27d14f6c
commit f4f0892b25
1 changed files with 9 additions and 2 deletions
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11
src/modules/sdlog2/sdlog2.c
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@ -196,6 +196,10 @@ static pthread_attr_t logwriter_attr;
static perf_counter_t perf_write;
/* Keep track if we've already created a folder named sessXXX because
* we don't want to create yet another one. */
static bool sess_folder_created = false;
/**
* Log buffer writing thread. Open and close file here.
*/
@ -452,13 +456,16 @@ int create_log_dir()
}
} else {
/* look for the next dir that does not exist */
while (dir_number <= MAX_NO_LOGFOLDER) {
/* Look for the next dir that does not exist.
* However, if we've already crated a sessXXX folder in this session
* let's re-use it. */
while (dir_number <= MAX_NO_LOGFOLDER && !sess_folder_created) {
/* format log dir: e.g. /fs/microsd/sess001 */
sprintf(log_dir, "%s/sess%03u", log_root, dir_number);
mkdir_ret = mkdir(log_dir, S_IRWXU | S_IRWXG | S_IRWXO);
if (mkdir_ret == 0) {
sess_folder_created = true;
break;
} else if (errno != EEXIST) {