1 #include "stdio_impl.h" 2 #include <string.h> 3 #include <signal.h> 4 #include <errno.h> 5 psignal(int sig,const char * msg)6void psignal(int sig, const char *msg) 7 { 8 FILE *f = stderr; 9 char *s = strsignal(sig); 10 11 FLOCK(f); 12 13 /* Save stderr's orientation and encoding rule, since psignal is not 14 * permitted to change them. Save errno and restore it if there is no 15 * error since fprintf might change it even on success but psignal is 16 * not permitted to do so. */ 17 void *old_locale = f->locale; 18 int old_mode = f->mode; 19 int old_errno = errno; 20 21 if (fprintf(f, "%s%s%s\n", msg?msg:"", msg?": ":"", s)>=0) 22 errno = old_errno; 23 f->mode = old_mode; 24 f->locale = old_locale; 25 26 FUNLOCK(f); 27 } 28