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1.1 root 1: #ifndef lint
2: static char *sccsid = "@(#)atrun.c 4.4 (Berkeley) 7/2/83";
3: #endif
4: /*
5: * Run programs submitted by at.
6: */
7: #include <stdio.h>
8: #include <sys/param.h>
9: #include <sys/dir.h>
10: #include <sys/time.h>
11: #include <sys/stat.h>
12:
13: # define ATDIR "/usr/spool/at"
14: # define PDIR "past"
15: # define LASTF "/usr/spool/at/lasttimedone"
16:
17: int nowtime;
18: int nowdate;
19: int nowyear;
20:
21: main(argc, argv)
22: char **argv;
23: {
24: int tt, day, year, uniq;
25: struct direct *dirent;
26: DIR *dirp;
27:
28: chdir(ATDIR);
29: makenowtime();
30: if ((dirp = opendir(".")) == NULL) {
31: fprintf(stderr, "Cannot read at directory\n");
32: exit(1);
33: }
34: while ((dirent = readdir(dirp)) != NULL) {
35: if (dirent->d_ino==0)
36: continue;
37: if (sscanf(dirent->d_name, "%2d.%3d.%4d.%2d", &year, &day, &tt, &uniq) != 4)
38: continue;
39: if (nowyear < year)
40: continue;
41: if (nowyear==year && nowdate < day)
42: continue;
43: if (nowyear==year && nowdate==day && nowtime < tt)
44: continue;
45: run(dirent->d_name);
46: }
47: closedir(dirp);
48: updatetime(nowtime);
49: exit(0);
50: }
51:
52: makenowtime()
53: {
54: long t;
55: struct tm *localtime();
56: register struct tm *tp;
57:
58: time(&t);
59: tp = localtime(&t);
60: nowtime = tp->tm_hour*100 + tp->tm_min;
61: nowdate = tp->tm_yday;
62: nowyear = tp->tm_year;
63: }
64:
65: updatetime(t)
66: {
67: FILE *tfile;
68:
69: tfile = fopen(LASTF, "w");
70: if (tfile == NULL) {
71: fprintf(stderr, "can't write lastfile\n");
72: exit(1);
73: }
74: fprintf(tfile, "%04d\n", t);
75: }
76:
77: run(file)
78: char *file;
79: {
80: struct stat stbuf;
81: register pid, i;
82: char sbuf[64];
83:
84: /* printf("running %s\n", file); */
85: if (fork()!=0)
86: return;
87: for (i=0; i<15; i++)
88: close(i);
89: dup(dup(open("/dev/null", 0)));
90: sprintf(sbuf, "%s/%s", PDIR, file);
91: link(file, sbuf);
92: unlink(file);
93: chdir(PDIR);
94: if (stat(file, &stbuf) == -1)
95: exit(1);
96: if (pid = fork()) {
97: if (pid == -1)
98: exit(1);
99: wait((int *)0);
100: unlink(file);
101: exit(0);
102: }
103: setgid(stbuf.st_gid);
104: setuid(stbuf.st_uid);
105: execl("/bin/sh", "sh", file, 0);
106: execl("/usr/bin/sh", "sh", file, 0);
107: fprintf(stderr, "Can't execl shell\n");
108: exit(1);
109: }
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