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sysctl: add sysctl_writef() helper

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This commit is contained in:
Lennart Poettering
2019-07-12 10:34:04 +02:00
parent 701f6af6b9
commit 6a47f2a714
2 changed files with 16 additions and 0 deletions
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15
src/shared/sysctl-util.c
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@@ -60,6 +60,21 @@ int sysctl_write(const char *property, const char *value) {
return 0;
}
int sysctl_writef(const char *property, const char *format, ...) {
_cleanup_free_ char *v = NULL;
va_list ap;
int r;
va_start(ap, format);
r = vasprintf(&v, format, ap);
va_end(ap);
if (r < 0)
return -ENOMEM;
return sysctl_write(property, v);
}
int sysctl_write_ip_property(int af, const char *ifname, const char *property, const char *value) {
const char *p;

1
src/shared/sysctl-util.h
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@@ -11,6 +11,7 @@
char *sysctl_normalize(char *s);
int sysctl_read(const char *property, char **value);
int sysctl_write(const char *property, const char *value);
int sysctl_writef(const char *propery, const char *format, ...) _printf_(2, 3);
int sysctl_read_ip_property(int af, const char *ifname, const char *property, char **ret);
int sysctl_write_ip_property(int af, const char *ifname, const char *property, const char *value);