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fix log_rotate warnings (#529) 

* ignore file-not-found errors when trying to rotate logs.
I suspect this is faster and safer than testing existence.

* block rename warnings, part deux
This commit is contained in:
Enno Rehling 2016-08-05 20:15:05 +02:00 committed by GitHub
parent 8f9bfe85b6
commit 03a8b7383c
1 changed files with 7 additions and 6 deletions
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13
src/util/log.c
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@ -93,7 +93,7 @@ cp_convert(const char *format, char *buffer, size_t length, int codepage)
void log_rotate(const char *filename, int maxindex)
{
char buffer[2][MAX_PATH];
int dst = 1;
int err, dst = 1;
assert(strlen(filename) < sizeof(buffer[0]) - 4);
sprintf(buffer[dst], "%s.%d", filename, maxindex);
@ -101,16 +101,17 @@ void log_rotate(const char *filename, int maxindex)
remove(buffer[dst]);
while (maxindex > 0) {
int err, src = 1 - dst;
int src = 1 - dst;
sprintf(buffer[src], "%s.%d", filename, --maxindex);
err = rename(buffer[src], buffer[dst]);
if (err != 0) {
fprintf(stderr, "log rotate %s: %s", buffer[dst], strerror(errno));
if ((err != 0) && (err != ENOENT)) {
fprintf(stderr, "log rotate %s: %d %s", buffer[dst], errno, strerror(errno));
}
dst = src;
}
if (rename(filename, buffer[dst]) != 0) {
fprintf(stderr, "log rotate %s: %s", buffer[dst], strerror(errno));
err = rename(filename, buffer[dst]);
if ((err != 0) && (err != ENOENT)) {
fprintf(stderr, "log rotate %s: %d %s", buffer[dst], errno, strerror(errno));
}
}