|SETLOGMASK(3)||Linux Programmer's Manual||SETLOGMASK(3)|
int setlogmask(int mask);
The setlogmask() function sets this logmask for the calling process, and returns the previous mask. If the mask argument is 0, the current logmask is not modified.
The eight priorities are LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR, LOG_WARNING, LOG_NOTICE, LOG_INFO, and LOG_DEBUG. The bit corresponding to a priority p is LOG_MASK(p). Some systems also provide a macro LOG_UPTO(p) for the mask of all priorities in the above list up to and including p.
|setlogmask ()||Thread safety||MT-Unsafe race:LogMask|
LOG_UPTO() will be included in the next release of the POSIX specification (Issue 8).