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libbpftune: support quiet mode for bpftune_netns_set() #105

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Merged
alan-maguire merged 1 commit into from
Nov 20, 2024
Merged

libbpftune: support quiet mode for bpftune_netns_set() #105

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2 changes: 1 addition & 1 deletion include/bpftune/libbpftune.h
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Original file line number Diff line number Diff line change
Expand Up @@ -291,7 +291,7 @@ int bpftune_sysctl_read(int netns_fd, const char *name, long *values);
int bpftune_sysctl_write(int netns_fd, const char *name, __u8 num_values, long *values);

bool bpftune_netns_cookie_supported(void);
int bpftune_netns_set(int fd, int *orig_fd);
int bpftune_netns_set(int fd, int *orig_fd, bool quiet);
int bpftune_netns_info(int pid, int *fd, unsigned long *cookie);
int bpftune_netns_init_all(void);
void bpftuner_netns_init(struct bpftuner *tuner, unsigned long cookie);
Expand Down
17 changes: 9 additions & 8 deletions src/libbpftune.c
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Original file line number Diff line number Diff line change
Expand Up @@ -867,7 +867,7 @@ int bpftune_sysctl_read(int netns_fd, const char *name, long *values)

bpftune_sysctl_name_to_path(name, path, sizeof(path));

err = bpftune_netns_set(netns_fd, &orig_netns_fd);
err = bpftune_netns_set(netns_fd, &orig_netns_fd, false);
if (err < 0)
goto out_unset;

Expand Down Expand Up @@ -898,7 +898,7 @@ int bpftune_sysctl_read(int netns_fd, const char *name, long *values)
}

out:
bpftune_netns_set(orig_netns_fd, NULL);
bpftune_netns_set(orig_netns_fd, NULL, true);
out_unset:
bpftune_cap_drop();
return err ? err : num_values;
Expand All @@ -920,7 +920,7 @@ int bpftune_sysctl_write(int netns_fd, const char *name, __u8 num_values, long *
err = bpftune_cap_add();
if (err)
return err;
err = bpftune_netns_set(netns_fd, &orig_netns_fd);
err = bpftune_netns_set(netns_fd, &orig_netns_fd, false);
if (err < 0)
goto out_unset;

Expand Down Expand Up @@ -955,7 +955,7 @@ int bpftune_sysctl_write(int netns_fd, const char *name, __u8 num_values, long *
name, i, values[i]);
}
out:
bpftune_netns_set(orig_netns_fd, NULL);
bpftune_netns_set(orig_netns_fd, NULL, true);
out_unset:
bpftune_cap_drop();
return err;
Expand Down Expand Up @@ -1217,7 +1217,7 @@ static int bpftune_netns_fd(int netns_pid)
}

/* sets original netns fd if orig_fd is non-NULL */
int bpftune_netns_set(int new_fd, int *orig_fd)
int bpftune_netns_set(int new_fd, int *orig_fd, bool quiet)
{
int fd = 0, err = 0;

Expand All @@ -1241,7 +1241,8 @@ int bpftune_netns_set(int new_fd, int *orig_fd)
err = setns(new_fd, CLONE_NEWNET);
if (err < 0) {
err = -errno;
bpftune_log(LOG_ERR, "could not %s ns(%d): %s\n",
bpftune_log(quiet ? LOG_DEBUG : LOG_ERR,
"could not %s ns(%d): %s\n",
orig_fd ? "set" : "restore",
new_fd, strerror(-err));
}
Expand Down Expand Up @@ -1276,7 +1277,7 @@ int bpftune_netns_info(int pid, int *fd, unsigned long *cookie)
return netns_fd;
}

err = bpftune_netns_set(netns_fd, &orig_netns_fd);
err = bpftune_netns_set(netns_fd, &orig_netns_fd, true);
if (!err) {
int s = socket(AF_INET, SOCK_STREAM, 0);

Expand All @@ -1299,7 +1300,7 @@ int bpftune_netns_info(int pid, int *fd, unsigned long *cookie)

close(s);
}
bpftune_netns_set(orig_netns_fd, NULL);
bpftune_netns_set(orig_netns_fd, NULL, true);

if (ret == 0) {
if (fdnew && fd)
Expand Down