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	rm.c - sbase - suckless unix tools
	git clone git://git.suckless.org/sbase
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	---
	rm.c (1441B)
	---
	1 /* See LICENSE file for copyright and license details. */
	2 #include <fcntl.h>
	3 #include <string.h>
	4
	5 #include "fs.h"
	6 #include "util.h"
	7
	8 static void
	9 usage(void)
	10 {
	11 eprintf("usage: %s [-f] [-iRr] file ...\n", argv0);
	12 }
	13
	14 static int
	15 forbidden(char path, struct stat root)
	16 {
	17 char s, t;
	18 size_t n;
	19 struct stat st;
	20 static int w1, w2;
	21
	22 n = strlen(path);
	23 for (t = path + n; t > path && t[-1] == '/'; --t)
	24 ;
	25 for (s = t; s > path && s[-1] != '/'; --s)
	26 ;
	27 n = t - s;
	28 if (n == 1 && *s == '.' \|\| n == 2 && s[0] == '.' && s[1] == '.')…
	29 if (!w1)
	30 weprintf("\".\" and \"..\" may not be removed\n"…
	31 w1 = 1;
	32 return 1;
	33 }
	34
	35 if (stat(path, &st) < 0)
	36 return 0;
	37 if (st.st_dev == root->st_dev && st.st_ino == root->st_ino) {
	38 if (!w2)
	39 weprintf("\"/\" may not be removed\n");
	40 w2 = 1;
	41 return 1;
	42 }
	43
	44 return 0;
	45 }
	46
	47 int
	48 main(int argc, char *argv[])
	49 {
	50 char *s;
	51 struct stat st;
	52 struct recursor r = { .fn = rm, .maxdepth = 1, .follow = 'P' };
	53
	54 ARGBEGIN {
	55 case 'f':
	56 r.flags \|= SILENT \| IGNORE;
	57 break;
	58 case 'i':
	59 r.flags \|= CONFIRM;
	60 break;
	61 case 'R':
	62 case 'r':
	63 r.maxdepth = 0;
	64 break;
	65 default:
	66 usage();
	67 } ARGEND
	68
	69 if (!argc) {
	70 if (!(r.flags & IGNORE))
	71 usage();
	72 else
	73 return 0;
	74 }
	75
	76 if (stat("/", &st) < 0)
	77 eprintf("stat root:");
	78 for (; *argv; argc--, argv++) {
	79 if (forbidden(*argv, &st)) {
	80 rm_status = 1;
	81 continue;
	82 }
	83 recurse(AT_FDCWD, *argv, NULL, &r);
	84 }
	85
	86 return rm_status \|\| recurse_status;
	87 }