In pcap_init(), we open the packet capture file with O_CLOEXEC only
when possible.
In logfile_init() and pidfile_open(), the fact that we pass a third
'mode' argument to open() seems to confuse the android-cloexec-open
checker in LLVM versions from 16 to 19 (at least).
The checker is suggesting to add O_CLOEXEC to 'mode', and not in
'flags', where we already have it.
Signed-off-by: Stefano Brivio <sbrivio(a)redhat.com>
---
log.c | 4 ++++
pcap.c | 1 +
util.c | 4 ++++
3 files changed, 9 insertions(+)
diff --git a/log.c b/log.c
index 6932885..154466f 100644
--- a/log.c
+++ b/log.c
@@ -416,7 +416,11 @@ void logfile_init(const char *name, const char *path, size_t size)
if (readlink("/proc/self/exe", exe, PATH_MAX - 1) < 0)
die_perror("Failed to read own /proc/self/exe link");
+ /* We use O_CLOEXEC here, but clang-tidy as of LLVM 16 to 19 looks for
+ * it in the 'mode' argument if we have one, so...
+ */
log_file = open(path, O_CREAT | O_TRUNC | O_APPEND | O_RDWR | O_CLOEXEC,
+ /* NOLINTNEXTLINE(android-cloexec-open) */
S_IRUSR | S_IWUSR);
if (log_file == -1)
die_perror("Couldn't open log file %s", path);
diff --git a/pcap.c b/pcap.c
index 6ee6cdf..6753cfb 100644
--- a/pcap.c
+++ b/pcap.c
@@ -167,6 +167,7 @@ void pcap_init(struct ctx *c)
return;
flags |= c->foreground ? O_CLOEXEC : 0;
+ /* NOLINTNEXTLINE(android-cloexec-open): ...only where possible */
pcap_fd = open(c->pcap, flags, S_IRUSR | S_IWUSR);
if (pcap_fd == -1) {
perror("open");
diff --git a/util.c b/util.c
index eff6787..b719f9a 100644
--- a/util.c
+++ b/util.c
@@ -419,7 +419,11 @@ int pidfile_open(const char *path)
if (!*path)
return -1;
+ /* We use O_CLOEXEC here, but clang-tidy as of LLVM 16 to 19 looks for
+ * it in the 'mode' argument if we have one
+ */
if ((fd = open(path, O_CREAT | O_TRUNC | O_WRONLY | O_CLOEXEC,
+ /* NOLINTNEXTLINE(android-cloexec-open) */
S_IRUSR | S_IWUSR)) < 0) {
perror("PID file open");
exit(EXIT_FAILURE);
--
2.43.0