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treewide: Replace perror() calls with calls to logging functions

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perror() prints directly to standard error, but in many cases standard
error might be already closed, or we might want to skip logging, based
on configuration. Our logging functions provide all that.

While at it, make errors more descriptive, replacing some of the
existing basic perror-style messages.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Stefano Brivio 2024-06-15 00:37:11 +02:00
parent c1140df889
commit 92a22fef93
6 changed files with 38 additions and 58 deletions

12
log.c
View file

@ -206,10 +206,8 @@ void logfile_init(const char *name, const char *path, size_t size)
char nl = '\n', exe[PATH_MAX] = { 0 };
int n;
if (readlink("/proc/self/exe", exe, PATH_MAX - 1) < 0) {
perror("readlink /proc/self/exe");
exit(EXIT_FAILURE);
}
if (readlink("/proc/self/exe", exe, PATH_MAX - 1) < 0)
die_perror("Failed to read own /proc/self/exe link");
log_file = open(path, O_CREAT | O_TRUNC | O_APPEND | O_RDWR | O_CLOEXEC,
S_IRUSR | S_IWUSR);
@ -222,10 +220,8 @@ void logfile_init(const char *name, const char *path, size_t size)
name, exe, getpid());
if (write(log_file, log_header, n) <= 0 ||
write(log_file, &nl, 1) <= 0) {
perror("Couldn't write to log file\n");
exit(EXIT_FAILURE);
}
write(log_file, &nl, 1) <= 0)
die_perror("Couldn't write to log file");
/* For FALLOC_FL_COLLAPSE_RANGE: VFS block size can be up to one page */
log_cut_size = ROUND_UP(log_size * LOGFILE_CUT_RATIO / 100, PAGE_SIZE);