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Merge pull request #32437 from keszybz/notify-fixups-split-out

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Two fixups for sd-notify split out from #32093
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Luca Boccassi 2024-04-23 19:36:53 +02:00 committed by GitHub
parent e1e81c0920 f1a090b136
commit 5e1124b510
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GPG key ID: B5690EEEBB952194
2 changed files with 28 additions and 16 deletions
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4
man/sd_notify.xml
View file

@ -104,8 +104,8 @@
<para>If the <parameter>unset_environment</parameter> parameter is non-zero,
<function>sd_notify()</function> will unset the <varname>$NOTIFY_SOCKET</varname> environment variable
before returning (regardless of whether the function call itself succeeded or not). Further calls to
<function>sd_notify()</function> will then fail, and the variable is no longer inherited by child
processes.</para>
<function>sd_notify()</function> will then silently do nothing, and the variable is no longer inherited
by child processes.</para>
<para>The <parameter>state</parameter> parameter should contain a newline-separated list of variable
assignments, similar in style to an environment block. A trailing newline is implied if none is

40
src/libsystemd/sd-daemon/sd-daemon.c
View file

@ -650,7 +650,7 @@ _public_ int sd_notify(int unset_environment, const char *state) {
_public_ int sd_pid_notifyf(pid_t pid, int unset_environment, const char *format, ...) {
_cleanup_free_ char *p = NULL;
int r;
int r = 0, k;
if (format) {
va_list ap;
@ -659,16 +659,20 @@ _public_ int sd_pid_notifyf(pid_t pid, int unset_environment, const char *format
r = vasprintf(&p, format, ap);
va_end(ap);
if (r < 0 || !p)
return -ENOMEM;
if (r < 0 || !p) {
r = -ENOMEM;
p = mfree(p); /* If vasprintf failed, do not use the string,
* even if something was returned. */
}
}
return sd_pid_notify(pid, unset_environment, p);
k = sd_pid_notify(pid, unset_environment, p);
return r < 0 ? r : k;
}
_public_ int sd_notifyf(int unset_environment, const char *format, ...) {
_cleanup_free_ char *p = NULL;
int r;
int r = 0, k;
if (format) {
va_list ap;
@ -677,11 +681,15 @@ _public_ int sd_notifyf(int unset_environment, const char *format, ...) {
r = vasprintf(&p, format, ap);
va_end(ap);
if (r < 0 || !p)
return -ENOMEM;
if (r < 0 || !p) {
r = -ENOMEM;
p = mfree(p); /* If vasprintf failed, do not use the string,
* even if something was returned. */
}
}
return sd_pid_notify(0, unset_environment, p);
k = sd_pid_notify(0, unset_environment, p);
return r < 0 ? r : k;
}
_public_ int sd_pid_notifyf_with_fds(
@ -691,27 +699,31 @@ _public_ int sd_pid_notifyf_with_fds(
const char *format, ...) {
_cleanup_free_ char *p = NULL;
int r;
int r = 0, k;
/* Paranoia check: we traditionally used 'unsigned' as array size, but we nowadays more correctly use
* 'size_t'. sd_pid_notifyf_with_fds() and sd_pid_notify_with_fds() are from different eras, hence
* differ in this. Let's catch resulting incompatibilites early, even though they are pretty much
* theoretic only */
if (n_fds > UINT_MAX)
return -E2BIG;
r = -E2BIG;
if (format) {
else if (format) {
va_list ap;
va_start(ap, format);
r = vasprintf(&p, format, ap);
va_end(ap);
if (r < 0 || !p)
return -ENOMEM;
if (r < 0 || !p) {
r = -ENOMEM;
p = mfree(p); /* If vasprintf failed, do not use the string,
* even if something was returned. */
}
}
return sd_pid_notify_with_fds(pid, unset_environment, p, fds, n_fds);
k = sd_pid_notify_with_fds(pid, unset_environment, p, fds, n_fds);
return r < 0 ? r : k;
}
_public_ int sd_booted(void) {