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authorZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2014-10-21 23:34:29 -0400
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2014-10-23 00:27:23 -0400
commitd71839afd88589247d8dd42b2b09d024f521749d (patch)
treee210b8bd516ed2d1c04fcac11e588f587dea5144 /src/journal-remote/journal-upload.c
parentcb6518345fcc057ca6ed3d037253bb4eeab4d94e (diff)
journal-upload: verify state file can be saved before uploading
Do our best verify that we can actually write the state file before upload commences to avoid duplicate messages on the server.
Diffstat (limited to 'src/journal-remote/journal-upload.c')
-rw-r--r--src/journal-remote/journal-upload.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/src/journal-remote/journal-upload.c b/src/journal-remote/journal-upload.c
index 87d6ff7c06..37c12f0e07 100644
--- a/src/journal-remote/journal-upload.c
+++ b/src/journal-remote/journal-upload.c
@@ -31,6 +31,7 @@
#include "util.h"
#include "build.h"
#include "fileio.h"
+#include "mkdir.h"
#include "conf-parser.h"
#include "journal-upload.h"
@@ -93,6 +94,32 @@ static size_t output_callback(char *buf,
return size * nmemb;
}
+static int check_cursor_updating(Uploader *u) {
+ _cleanup_free_ char *temp_path = NULL;
+ _cleanup_fclose_ FILE *f = NULL;
+ int r;
+
+ if (!u->state_file)
+ return 0;
+
+ r = mkdir_parents(u->state_file, 0755);
+ if (r < 0) {
+ log_error("Cannot create parent directory of state file %s: %s",
+ u->state_file, strerror(-r));
+ return r;
+ }
+
+ r = fopen_temporary(u->state_file, &f, &temp_path);
+ if (r < 0) {
+ log_error("Cannot save state to %s: %s",
+ u->state_file, strerror(-r));
+ return r;
+ }
+ unlink(temp_path);
+
+ return 0;
+}
+
static int update_cursor_state(Uploader *u) {
_cleanup_free_ char *temp_path = NULL;
_cleanup_fclose_ FILE *f = NULL;
@@ -779,6 +806,10 @@ int main(int argc, char **argv) {
sd_event_set_watchdog(u.events, true);
+ r = check_cursor_updating(&u);
+ if (r < 0)
+ goto cleanup;
+
log_debug("%s running as pid "PID_FMT,
program_invocation_short_name, getpid());