113 lines
1.8 KiB
C
113 lines
1.8 KiB
C
/*
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* nix.c
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*
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* System interface for *nix systems.
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*/
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#undef _GNU_SOURCE
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#define _GNU_SOURCE
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#undef _BSD_SOURCE
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#define _BSD_SOURCE
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/time.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <errno.h>
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#include "../../defs.h"
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#include "../../rc.h"
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#define DOTDIR ".gnuboy"
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#ifndef HAVE_USLEEP
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static void my_usleep(unsigned int us)
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{
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struct timeval tv;
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tv.tv_sec = 0;
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tv.tv_usec = us;
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select(0, NULL, NULL, NULL, &tv);
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}
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#endif
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void *sys_timer()
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{
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struct timeval *tv;
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tv = malloc(sizeof(struct timeval));
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gettimeofday(tv, NULL);
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return tv;
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}
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int sys_elapsed(struct timeval *prev)
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{
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struct timeval tv;
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int secs, usecs;
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gettimeofday(&tv, NULL);
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secs = tv.tv_sec - prev->tv_sec;
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usecs = tv.tv_usec - prev->tv_usec;
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*prev = tv;
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if (!secs) return usecs;
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return 1000000 + usecs;
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}
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void sys_sleep(int us)
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{
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if (us <= 0) return;
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#ifdef HAVE_USLEEP
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usleep(us);
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#else
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my_usleep(us);
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#endif
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}
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void sys_checkdir(char *path, int wr)
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{
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char *p;
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if (access(path, X_OK | (wr ? W_OK : 0)))
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{
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if (!access(path, F_OK))
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die("cannot access %s: %s\n", path, strerror(errno));
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p = strrchr(path, '/');
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if (!p) die("descended to root trying to create dirs\n");
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*p = 0;
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sys_checkdir(path, wr);
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*p = '/';
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if (mkdir(path, 0777))
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die("cannot create %s: %s\n", path, strerror(errno));
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}
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}
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void sys_initpath()
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{
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char *buf, *home = getenv("HOME");
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if (!home)
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{
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buf = ".";
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rc_setvar("rcpath", 1, &buf);
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rc_setvar("savedir", 1, &buf);
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return;
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}
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buf = malloc(strlen(home) + strlen(DOTDIR) + 8);
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sprintf(buf, "%s/" DOTDIR ":.", home);
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rc_setvar("rcpath", 1, &buf);
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sprintf(buf, "%s/" DOTDIR "/saves" , home);
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rc_setvar("savedir", 1, &buf);
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free(buf);
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}
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void sys_sanitize(char *s)
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{
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}
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