/* * tmpnam.c - create a unique filename */ /* $Id$ */ #include #include #include #include #include "loc_incl.h" char * tmpnam(char *s) { static char name_buffer[L_tmpnam] = "/tmp/tmp."; static unsigned long count = 0; static char *name = NULL; if (!name) { name = name_buffer + strlen(name_buffer); name = _i_compute(getpid(), 10, name, 5); *name++ = '.'; *name = '\0'; } if (++count > TMP_MAX) count = 1; /* wrap-around */ *_i_compute(count, 10, name, 3) = '\0'; if (s) return strcpy(s, name_buffer); else return name_buffer; }