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1.20 ! christos 1: /* $NetBSD: util.c,v 1.19 1998/11/06 23:31:09 christos Exp $ */
1.4 christos 2:
1.1 cgd 3: /*
4: * Missing stuff from OS's
5: */
1.4 christos 6:
1.15 lukem 7: #ifdef MAKE_BOOTSTRAP
1.20 ! christos 8: static char rcsid[] = "$NetBSD: util.c,v 1.19 1998/11/06 23:31:09 christos Exp $";
1.15 lukem 9: #else
1.12 christos 10: #include <sys/cdefs.h>
1.4 christos 11: #ifndef lint
1.20 ! christos 12: __RCSID("$NetBSD: util.c,v 1.19 1998/11/06 23:31:09 christos Exp $");
1.15 lukem 13: #endif
1.4 christos 14: #endif
15:
1.1 cgd 16: #include <stdio.h>
1.2 glass 17: #include "make.h"
1.10 christos 18: #include <sys/param.h>
1.1 cgd 19:
1.14 christos 20: #ifndef __STDC__
1.1 cgd 21: # ifndef const
22: # define const
23: # endif
24: #endif
25:
26: #ifdef sun
27:
28:
29:
30: extern int errno, sys_nerr;
31: extern char *sys_errlist[];
32:
33: char *
1.8 christos 34: strerror(e)
35: int e;
1.1 cgd 36: {
37: static char buf[100];
38: if (e < 0 || e >= sys_nerr) {
39: sprintf(buf, "Unknown error %d", e);
40: return buf;
41: }
42: else
43: return sys_errlist[e];
44: }
45: #endif
46:
1.6 christos 47: #ifdef ultrix
48: #include <string.h>
49:
50: /* strdup
51: *
52: * Make a duplicate of a string.
53: * For systems which lack this function.
54: */
55: char *
56: strdup(str)
57: const char *str;
58: {
59: size_t len;
1.9 christos 60: char *p;
1.6 christos 61:
62: if (str == NULL)
63: return NULL;
64: len = strlen(str) + 1;
1.20 ! christos 65: p = emalloc(len);
1.6 christos 66:
67: return memcpy(p, str, len);
68: }
69:
70: #endif
71:
72: #if defined(sun) || defined(__hpux) || defined(__sgi)
1.1 cgd 73:
74: int
75: setenv(name, value, dum)
1.8 christos 76: const char *name;
1.1 cgd 77: const char *value;
78: int dum;
79: {
80: register char *p;
81: int len = strlen(name) + strlen(value) + 2; /* = \0 */
1.20 ! christos 82: char *ptr = (char*) emalloc(len);
1.1 cgd 83:
84: (void) dum;
85:
86: if (ptr == NULL)
87: return -1;
1.8 christos 88:
1.1 cgd 89: p = ptr;
90:
1.8 christos 91: while (*name)
1.1 cgd 92: *p++ = *name++;
93:
94: *p++ = '=';
95:
1.8 christos 96: while (*value)
1.1 cgd 97: *p++ = *value++;
98:
99: *p = '\0';
100:
101: len = putenv(ptr);
102: /* free(ptr); */
103: return len;
104: }
105: #endif
106:
107: #ifdef __hpux
108: #include <sys/types.h>
109: #include <sys/param.h>
110: #include <sys/syscall.h>
111: #include <sys/signal.h>
112: #include <sys/stat.h>
113: #include <stdio.h>
114: #include <dirent.h>
115: #include <sys/time.h>
116: #include <time.h>
117: #include <unistd.h>
118:
119:
120: int
121: killpg(pid, sig)
122: int pid, sig;
123: {
124: return kill(-pid, sig);
125: }
126:
127: void
128: srandom(seed)
129: long seed;
130: {
131: srand48(seed);
132: }
133:
134: long
135: random()
136: {
137: return lrand48();
138: }
139:
140: /* turn into bsd signals */
141: void (*
1.19 christos 142: signal(s, a)) __P((int))
1.1 cgd 143: int s;
1.19 christos 144: void (*a) __P((int));
1.1 cgd 145: {
146: struct sigvec osv, sv;
147:
148: (void) sigvector(s, (struct sigvec *) 0, &osv);
149: sv = osv;
150: sv.sv_handler = a;
151: #ifdef SV_BSDSIG
152: sv.sv_flags = SV_BSDSIG;
153: #endif
154:
155: if (sigvector(s, &sv, (struct sigvec *) 0) == -1)
156: return (BADSIG);
157: return (osv.sv_handler);
158: }
159:
160: #if !defined(BSD) && !defined(d_fileno)
161: # define d_fileno d_ino
162: #endif
163:
164: #ifndef DEV_DEV_COMPARE
165: # define DEV_DEV_COMPARE(a, b) ((a) == (b))
166: #endif
167: #define ISDOT(c) ((c)[0] == '.' && (((c)[1] == '\0') || ((c)[1] == '/')))
168: #define ISDOTDOT(c) ((c)[0] == '.' && ISDOT(&((c)[1])))
169:
170:
171: /* strrcpy():
172: * Like strcpy, going backwards and returning the new pointer
173: */
174: static char *
175: strrcpy(ptr, str)
176: register char *ptr, *str;
177: {
178: register int len = strlen(str);
179:
180: while (len)
181: *--ptr = str[--len];
182:
183: return (ptr);
184: } /* end strrcpy */
185:
186:
187: char *
188: getwd(pathname)
189: char *pathname;
190: {
191: DIR *dp;
192: struct dirent *d;
193: extern int errno;
194:
195: struct stat st_root, st_cur, st_next, st_dotdot;
196: char pathbuf[MAXPATHLEN], nextpathbuf[MAXPATHLEN * 2];
197: char *pathptr, *nextpathptr, *cur_name_add;
198:
199: /* find the inode of root */
200: if (stat("/", &st_root) == -1) {
201: (void) sprintf(pathname,
202: "getwd: Cannot stat \"/\" (%s)", strerror(errno));
203: return (NULL);
204: }
205: pathbuf[MAXPATHLEN - 1] = '\0';
206: pathptr = &pathbuf[MAXPATHLEN - 1];
207: nextpathbuf[MAXPATHLEN - 1] = '\0';
208: cur_name_add = nextpathptr = &nextpathbuf[MAXPATHLEN - 1];
209:
210: /* find the inode of the current directory */
211: if (lstat(".", &st_cur) == -1) {
212: (void) sprintf(pathname,
213: "getwd: Cannot stat \".\" (%s)", strerror(errno));
214: return (NULL);
215: }
216: nextpathptr = strrcpy(nextpathptr, "../");
217:
218: /* Descend to root */
219: for (;;) {
220:
221: /* look if we found root yet */
222: if (st_cur.st_ino == st_root.st_ino &&
223: DEV_DEV_COMPARE(st_cur.st_dev, st_root.st_dev)) {
224: (void) strcpy(pathname, *pathptr != '/' ? "/" : pathptr);
225: return (pathname);
226: }
227:
228: /* open the parent directory */
229: if (stat(nextpathptr, &st_dotdot) == -1) {
230: (void) sprintf(pathname,
231: "getwd: Cannot stat directory \"%s\" (%s)",
232: nextpathptr, strerror(errno));
233: return (NULL);
234: }
235: if ((dp = opendir(nextpathptr)) == NULL) {
236: (void) sprintf(pathname,
237: "getwd: Cannot open directory \"%s\" (%s)",
238: nextpathptr, strerror(errno));
239: return (NULL);
240: }
241:
242: /* look in the parent for the entry with the same inode */
243: if (DEV_DEV_COMPARE(st_dotdot.st_dev, st_cur.st_dev)) {
244: /* Parent has same device. No need to stat every member */
1.8 christos 245: for (d = readdir(dp); d != NULL; d = readdir(dp))
1.1 cgd 246: if (d->d_fileno == st_cur.st_ino)
247: break;
248: }
249: else {
1.8 christos 250: /*
251: * Parent has a different device. This is a mount point so we
252: * need to stat every member
1.1 cgd 253: */
254: for (d = readdir(dp); d != NULL; d = readdir(dp)) {
255: if (ISDOT(d->d_name) || ISDOTDOT(d->d_name))
256: continue;
257: (void) strcpy(cur_name_add, d->d_name);
258: if (lstat(nextpathptr, &st_next) == -1) {
259: (void) sprintf(pathname, "getwd: Cannot stat \"%s\" (%s)",
260: d->d_name, strerror(errno));
261: (void) closedir(dp);
262: return (NULL);
263: }
264: /* check if we found it yet */
265: if (st_next.st_ino == st_cur.st_ino &&
1.8 christos 266: DEV_DEV_COMPARE(st_next.st_dev, st_cur.st_dev))
1.1 cgd 267: break;
268: }
269: }
270: if (d == NULL) {
271: (void) sprintf(pathname, "getwd: Cannot find \".\" in \"..\"");
272: (void) closedir(dp);
273: return (NULL);
274: }
275: st_cur = st_dotdot;
276: pathptr = strrcpy(pathptr, d->d_name);
277: pathptr = strrcpy(pathptr, "/");
278: nextpathptr = strrcpy(nextpathptr, "../");
279: (void) closedir(dp);
280: *cur_name_add = '\0';
281: }
282: } /* end getwd */
283:
284:
285: char *sys_siglist[] = {
286: "Signal 0",
287: "Hangup", /* SIGHUP */
288: "Interrupt", /* SIGINT */
289: "Quit", /* SIGQUIT */
290: "Illegal instruction", /* SIGILL */
291: "Trace/BPT trap", /* SIGTRAP */
292: "IOT trap", /* SIGIOT */
293: "EMT trap", /* SIGEMT */
294: "Floating point exception", /* SIGFPE */
295: "Killed", /* SIGKILL */
296: "Bus error", /* SIGBUS */
297: "Segmentation fault", /* SIGSEGV */
298: "Bad system call", /* SIGSYS */
299: "Broken pipe", /* SIGPIPE */
300: "Alarm clock", /* SIGALRM */
301: "Terminated", /* SIGTERM */
302: "User defined signal 1", /* SIGUSR1 */
303: "User defined signal 2", /* SIGUSR2 */
304: "Child exited", /* SIGCLD */
305: "Power-fail restart", /* SIGPWR */
306: "Virtual timer expired", /* SIGVTALRM */
307: "Profiling timer expired", /* SIGPROF */
308: "I/O possible", /* SIGIO */
309: "Window size changes", /* SIGWINDOW */
310: "Stopped (signal)", /* SIGSTOP */
311: "Stopped", /* SIGTSTP */
312: "Continued", /* SIGCONT */
313: "Stopped (tty input)", /* SIGTTIN */
314: "Stopped (tty output)", /* SIGTTOU */
315: "Urgent I/O condition", /* SIGURG */
316: "Remote lock lost (NFS)", /* SIGLOST */
317: "Signal 31", /* reserved */
318: "DIL signal" /* SIGDIL */
319: };
320:
321: int
322: utimes(file, tvp)
323: char *file;
324: struct timeval tvp[2];
325: {
326: struct utimbuf t;
327:
328: t.actime = tvp[0].tv_sec;
329: t.modtime = tvp[1].tv_sec;
330: return(utime(file, &t));
331: }
332:
333:
334: #endif /* __hpux */
1.5 christos 335:
336: #if defined(sun) && defined(__svr4__)
337: #include <signal.h>
338:
339: /* turn into bsd signals */
340: void (*
1.19 christos 341: signal(s, a)) __P((int))
1.5 christos 342: int s;
1.19 christos 343: void (*a) __P((int));
1.5 christos 344: {
345: struct sigaction sa, osa;
346:
347: sa.sa_handler = a;
348: sigemptyset(&sa.sa_mask);
349: sa.sa_flags = SA_RESTART;
350:
351: if (sigaction(s, &sa, &osa) == -1)
352: return SIG_ERR;
353: else
354: return osa.sa_handler;
355: }
356:
1.10 christos 357: #endif
358:
359: #ifndef BSD4_4
360: #ifdef __STDC__
361: #include <stdarg.h>
362: #else
363: #include <varargs.h>
364: #endif
365:
366: #ifdef _IOSTRG
367: #define STRFLAG (_IOSTRG|_IOWRT) /* no _IOWRT: avoid stdio bug */
368: #else
1.11 christos 369: #if 0
1.10 christos 370: #define STRFLAG (_IOREAD) /* XXX: Assume svr4 stdio */
371: #endif
1.11 christos 372: #endif
1.10 christos 373:
374: int
375: vsnprintf(s, n, fmt, args)
376: char *s;
377: size_t n;
378: const char *fmt;
379: va_list args;
380: {
1.19 christos 381: #ifdef STRFLAG
1.10 christos 382: FILE fakebuf;
383:
384: fakebuf._flag = STRFLAG;
385: /*
386: * Some os's are char * _ptr, others are unsigned char *_ptr...
387: * We cast to void * to make everyone happy.
388: */
389: fakebuf._ptr = (void *) s;
390: fakebuf._cnt = n-1;
391: fakebuf._file = -1;
392: _doprnt(fmt, args, &fakebuf);
393: fakebuf._cnt++;
394: putc('\0', &fakebuf);
395: if (fakebuf._cnt<0)
396: fakebuf._cnt = 0;
397: return (n-fakebuf._cnt-1);
1.11 christos 398: #else
1.13 christos 399: (void) vsprintf(s, fmt, args);
1.11 christos 400: return strlen(s);
401: #endif
1.10 christos 402: }
403:
404: int
405: #ifdef __STDC__
406: snprintf(char *s, size_t n, const char *fmt, ...)
407: #else
408: snprintf(va_alist)
409: va_dcl
410: #endif
411: {
412: va_list ap;
413: int rv;
414: #ifdef __STDC__
415: va_start(ap, fmt);
416: #else
417: char *s;
418: size_t n;
419: const char *fmt;
420:
421: va_start(ap);
422:
423: s = va_arg(ap, char *);
424: n = va_arg(ap, size_t);
425: fmt = va_arg(ap, const char *);
426: #endif
427: rv = vsnprintf(s, n, fmt, ap);
428: va_end(ap);
429: return rv;
1.16 christos 430: }
431:
1.18 christos 432: #ifndef __SVR4
1.16 christos 433: int
434: strftime(buf, len, fmt, tm)
435: char *buf;
436: size_t len;
437: const char *fmt;
1.18 christos 438: const struct tm *tm;
1.16 christos 439: {
1.17 christos 440: static char months[][4] = {
1.16 christos 441: "Jan", "Feb", "Mar", "Apr", "May", "Jun",
442: "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
443: };
444:
445: size_t s;
446: char *b = buf;
447:
448: while (*fmt) {
449: if (len == 0)
450: return buf - b;
451: if (*fmt != '%') {
452: *buf++ = *fmt++;
453: len--;
454: continue;
455: }
456: switch (*fmt++) {
457: case '%':
458: *buf++ = '%';
459: len--;
460: if (len == 0) return buf - b;
461: /*FALLTHROUGH*/
462: case '\0':
463: *buf = '%';
464: s = 1;
465: break;
466: case 'k':
467: s = snprintf(buf, len, "%d", tm->tm_hour);
468: break;
469: case 'M':
470: s = snprintf(buf, len, "%02d", tm->tm_min);
471: break;
472: case 'S':
473: s = snprintf(buf, len, "%02d", tm->tm_sec);
474: break;
475: case 'b':
476: if (tm->tm_mon >= 12)
477: return buf - b;
478: s = snprintf(buf, len, "%s", months[tm->tm_mon]);
479: break;
480: case 'd':
481: s = snprintf(buf, len, "%s", tm->tm_mday);
482: break;
483: case 'Y':
484: s = snprintf(buf, len, "%s", 1900 + tm->tm_year);
485: break;
486: default:
487: s = snprintf(buf, len, "Unsupported format %c",
488: fmt[-1]);
489: break;
490: }
491: buf += s;
492: len -= s;
493: }
1.10 christos 494: }
1.18 christos 495: #endif
1.5 christos 496: #endif