1 ff3adf60 2004-04-14 devnull #include <u.h>
  2 ff3adf60 2004-04-14 devnull #include <libc.h>
  3 ff3adf60 2004-04-14 devnull #include <bio.h>
  4 ff3adf60 2004-04-14 devnull #include <flate.h>
  5 ff3adf60 2004-04-14 devnull #include "gzip.h"
  6 ff3adf60 2004-04-14 devnull 
  7 ff3adf60 2004-04-14 devnull typedef struct	GZHead	GZHead;
  8 ff3adf60 2004-04-14 devnull 
  9 ff3adf60 2004-04-14 devnull struct GZHead
 10 ff3adf60 2004-04-14 devnull {
 11 8425b514 2010-02-23 rsc 	u32int	mtime;
 12 ff3adf60 2004-04-14 devnull 	char	*file;
 13 ff3adf60 2004-04-14 devnull };
 14 ff3adf60 2004-04-14 devnull 
 15 ff3adf60 2004-04-14 devnull static	int	crcwrite(void *bout, void *buf, int n);
 16 ff3adf60 2004-04-14 devnull static	int	get1(Biobuf *b);
 17 8425b514 2010-02-23 rsc static	u32int	get4(Biobuf *b);
 18 ff3adf60 2004-04-14 devnull static	int	gunzipf(char *file, int stdout);
 19 ff3adf60 2004-04-14 devnull static	int	gunzip(int ofd, char *ofile, Biobuf *bin);
 20 ff3adf60 2004-04-14 devnull static	void	header(Biobuf *bin, GZHead *h);
 21 ff3adf60 2004-04-14 devnull static	void	trailer(Biobuf *bin, long wlen);
 22 ff3adf60 2004-04-14 devnull static	void	error(char*, ...);
 23 ff3adf60 2004-04-14 devnull /* #pragma	varargck	argpos	error	1 */
 24 ff3adf60 2004-04-14 devnull 
 25 ff3adf60 2004-04-14 devnull static	Biobuf	bin;
 26 8425b514 2010-02-23 rsc static	u32int	crc;
 27 8425b514 2010-02-23 rsc static	u32int	*crctab;
 28 ff3adf60 2004-04-14 devnull static	int	debug;
 29 ff3adf60 2004-04-14 devnull static	char	*delfile;
 30 ff3adf60 2004-04-14 devnull static	vlong	gzok;
 31 ff3adf60 2004-04-14 devnull static	char	*infile;
 32 ff3adf60 2004-04-14 devnull static	int	settimes;
 33 ff3adf60 2004-04-14 devnull static	int	table;
 34 ff3adf60 2004-04-14 devnull static	int	verbose;
 35 ff3adf60 2004-04-14 devnull static	int	wbad;
 36 8425b514 2010-02-23 rsc static	u32int	wlen;
 37 ff3adf60 2004-04-14 devnull static	jmp_buf	zjmp;
 38 ff3adf60 2004-04-14 devnull 
 39 ff3adf60 2004-04-14 devnull void
 40 ff3adf60 2004-04-14 devnull usage(void)
 41 ff3adf60 2004-04-14 devnull {
 42 ff3adf60 2004-04-14 devnull 	fprint(2, "usage: gunzip [-ctvTD] [file ....]\n");
 43 ff3adf60 2004-04-14 devnull 	exits("usage");
 44 ff3adf60 2004-04-14 devnull }
 45 ff3adf60 2004-04-14 devnull 
 46 ff3adf60 2004-04-14 devnull void
 47 ff3adf60 2004-04-14 devnull main(int argc, char *argv[])
 48 ff3adf60 2004-04-14 devnull {
 49 ff3adf60 2004-04-14 devnull 	int i, ok, stdout;
 50 ff3adf60 2004-04-14 devnull 
 51 ff3adf60 2004-04-14 devnull 	stdout = 0;
 52 ff3adf60 2004-04-14 devnull 	ARGBEGIN{
 53 ff3adf60 2004-04-14 devnull 	case 'D':
 54 ff3adf60 2004-04-14 devnull 		debug++;
 55 ff3adf60 2004-04-14 devnull 		break;
 56 ff3adf60 2004-04-14 devnull 	case 'c':
 57 ff3adf60 2004-04-14 devnull 		stdout++;
 58 ff3adf60 2004-04-14 devnull 		break;
 59 ff3adf60 2004-04-14 devnull 	case 't':
 60 ff3adf60 2004-04-14 devnull 		table++;
 61 ff3adf60 2004-04-14 devnull 		break;
 62 ff3adf60 2004-04-14 devnull 	case 'T':
 63 ff3adf60 2004-04-14 devnull 		settimes++;
 64 ff3adf60 2004-04-14 devnull 		break;
 65 ff3adf60 2004-04-14 devnull 	case 'v':
 66 ff3adf60 2004-04-14 devnull 		verbose++;
 67 ff3adf60 2004-04-14 devnull 		break;
 68 ff3adf60 2004-04-14 devnull 	default:
 69 ff3adf60 2004-04-14 devnull 		usage();
 70 ff3adf60 2004-04-14 devnull 		break;
 71 ff3adf60 2004-04-14 devnull 	}ARGEND
 72 ff3adf60 2004-04-14 devnull 
 73 ff3adf60 2004-04-14 devnull 	crctab = mkcrctab(GZCRCPOLY);
 74 ff3adf60 2004-04-14 devnull 	ok = inflateinit();
 75 ff3adf60 2004-04-14 devnull 	if(ok != FlateOk)
 76 ff3adf60 2004-04-14 devnull 		sysfatal("inflateinit failed: %s\n", flateerr(ok));
 77 ff3adf60 2004-04-14 devnull 
 78 ff3adf60 2004-04-14 devnull 	if(argc == 0){
 79 ff3adf60 2004-04-14 devnull 		Binit(&bin, 0, OREAD);
 80 ff3adf60 2004-04-14 devnull 		settimes = 0;
 81 ff3adf60 2004-04-14 devnull 		infile = "<stdin>";
 82 ff3adf60 2004-04-14 devnull 		ok = gunzip(1, "<stdout>", &bin);
 83 ff3adf60 2004-04-14 devnull 	}else{
 84 ff3adf60 2004-04-14 devnull 		ok = 1;
 85 ff3adf60 2004-04-14 devnull 		if(stdout)
 86 ff3adf60 2004-04-14 devnull 			settimes = 0;
 87 ff3adf60 2004-04-14 devnull 		for(i = 0; i < argc; i++)
 88 ff3adf60 2004-04-14 devnull 			ok &= gunzipf(argv[i], stdout);
 89 ff3adf60 2004-04-14 devnull 	}
 90 ff3adf60 2004-04-14 devnull 
 91 ff3adf60 2004-04-14 devnull 	exits(ok ? nil: "errors");
 92 ff3adf60 2004-04-14 devnull }
 93 ff3adf60 2004-04-14 devnull 
 94 ff3adf60 2004-04-14 devnull static int
 95 ff3adf60 2004-04-14 devnull gunzipf(char *file, int stdout)
 96 ff3adf60 2004-04-14 devnull {
 97 ff3adf60 2004-04-14 devnull 	char ofile[256], *s;
 98 ff3adf60 2004-04-14 devnull 	int ofd, ifd, ok;
 99 ff3adf60 2004-04-14 devnull 
100 ff3adf60 2004-04-14 devnull 	infile = file;
101 ff3adf60 2004-04-14 devnull 	ifd = open(file, OREAD);
102 ff3adf60 2004-04-14 devnull 	if(ifd < 0){
103 ff3adf60 2004-04-14 devnull 		fprint(2, "gunzip: can't open %s: %r\n", file);
104 ff3adf60 2004-04-14 devnull 		return 0;
105 ff3adf60 2004-04-14 devnull 	}
106 ff3adf60 2004-04-14 devnull 
107 ff3adf60 2004-04-14 devnull 	Binit(&bin, ifd, OREAD);
108 ff3adf60 2004-04-14 devnull 	if(Bgetc(&bin) != GZMAGIC1 || Bgetc(&bin) != GZMAGIC2 || Bgetc(&bin) != GZDEFLATE){
109 ff3adf60 2004-04-14 devnull 		fprint(2, "gunzip: %s is not a gzip deflate file\n", file);
110 ff3adf60 2004-04-14 devnull 		Bterm(&bin);
111 ff3adf60 2004-04-14 devnull 		close(ifd);
112 ff3adf60 2004-04-14 devnull 		return 0;
113 ff3adf60 2004-04-14 devnull 	}
114 ff3adf60 2004-04-14 devnull 	Bungetc(&bin);
115 ff3adf60 2004-04-14 devnull 	Bungetc(&bin);
116 ff3adf60 2004-04-14 devnull 	Bungetc(&bin);
117 ff3adf60 2004-04-14 devnull 
118 ff3adf60 2004-04-14 devnull 	if(table)
119 ff3adf60 2004-04-14 devnull 		ofd = -1;
120 ff3adf60 2004-04-14 devnull 	else if(stdout){
121 ff3adf60 2004-04-14 devnull 		ofd = 1;
122 ff3adf60 2004-04-14 devnull 		strcpy(ofile, "<stdout>");
123 ff3adf60 2004-04-14 devnull 	}else{
124 ff3adf60 2004-04-14 devnull 		s = strrchr(file, '/');
125 ff3adf60 2004-04-14 devnull 		if(s != nil)
126 ff3adf60 2004-04-14 devnull 			s++;
127 ff3adf60 2004-04-14 devnull 		else
128 ff3adf60 2004-04-14 devnull 			s = file;
129 ff3adf60 2004-04-14 devnull 		strecpy(ofile, ofile+sizeof ofile, s);
130 ff3adf60 2004-04-14 devnull 		s = strrchr(ofile, '.');
131 ff3adf60 2004-04-14 devnull 		if(s != nil && s != ofile && strcmp(s, ".gz") == 0)
132 ff3adf60 2004-04-14 devnull 			*s = '\0';
133 ff3adf60 2004-04-14 devnull 		else if(s != nil && strcmp(s, ".tgz") == 0)
134 ff3adf60 2004-04-14 devnull 			strcpy(s, ".tar");
135 ff3adf60 2004-04-14 devnull 		else if(strcmp(file, ofile) == 0){
136 ff3adf60 2004-04-14 devnull 			fprint(2, "gunzip: can't overwrite %s\n", file);
137 ff3adf60 2004-04-14 devnull 			Bterm(&bin);
138 ff3adf60 2004-04-14 devnull 			close(ifd);
139 ff3adf60 2004-04-14 devnull 			return 0;
140 ff3adf60 2004-04-14 devnull 		}
141 ff3adf60 2004-04-14 devnull 
142 ff3adf60 2004-04-14 devnull 		ofd = create(ofile, OWRITE, 0666);
143 ff3adf60 2004-04-14 devnull 		if(ofd < 0){
144 ff3adf60 2004-04-14 devnull 			fprint(2, "gunzip: can't create %s: %r\n", ofile);
145 ff3adf60 2004-04-14 devnull 			Bterm(&bin);
146 ff3adf60 2004-04-14 devnull 			close(ifd);
147 ff3adf60 2004-04-14 devnull 			return 0;
148 ff3adf60 2004-04-14 devnull 		}
149 ff3adf60 2004-04-14 devnull 		delfile = ofile;
150 ff3adf60 2004-04-14 devnull 	}
151 ff3adf60 2004-04-14 devnull 
152 ff3adf60 2004-04-14 devnull 	wbad = 0;
153 ff3adf60 2004-04-14 devnull 	ok = gunzip(ofd, ofile, &bin);
154 ff3adf60 2004-04-14 devnull 	Bterm(&bin);
155 ff3adf60 2004-04-14 devnull 	close(ifd);
156 ff3adf60 2004-04-14 devnull 	if(wbad){
157 ff3adf60 2004-04-14 devnull 		fprint(2, "gunzip: can't write %s: %r\n", ofile);
158 ff3adf60 2004-04-14 devnull 		if(delfile)
159 ff3adf60 2004-04-14 devnull 			remove(delfile);
160 ff3adf60 2004-04-14 devnull 	}
161 ff3adf60 2004-04-14 devnull 	delfile = nil;
162 ff3adf60 2004-04-14 devnull 	if(!stdout && ofd >= 0)
163 ff3adf60 2004-04-14 devnull 		close(ofd);
164 ff3adf60 2004-04-14 devnull 	return ok;
165 ff3adf60 2004-04-14 devnull }
166 ff3adf60 2004-04-14 devnull 
167 ff3adf60 2004-04-14 devnull static int
168 ff3adf60 2004-04-14 devnull gunzip(int ofd, char *ofile, Biobuf *bin)
169 ff3adf60 2004-04-14 devnull {
170 ff3adf60 2004-04-14 devnull 	Dir *d;
171 ff3adf60 2004-04-14 devnull 	GZHead h;
172 ff3adf60 2004-04-14 devnull 	int err;
173 ff3adf60 2004-04-14 devnull 
174 ff3adf60 2004-04-14 devnull 	h.file = nil;
175 ff3adf60 2004-04-14 devnull 	gzok = 0;
176 ff3adf60 2004-04-14 devnull 	for(;;){
177 ff3adf60 2004-04-14 devnull 		if(Bgetc(bin) < 0)
178 ff3adf60 2004-04-14 devnull 			return 1;
179 ff3adf60 2004-04-14 devnull 		Bungetc(bin);
180 ff3adf60 2004-04-14 devnull 
181 ff3adf60 2004-04-14 devnull 		if(setjmp(zjmp))
182 ff3adf60 2004-04-14 devnull 			return 0;
183 ff3adf60 2004-04-14 devnull 		header(bin, &h);
184 ff3adf60 2004-04-14 devnull 		gzok = 0;
185 ff3adf60 2004-04-14 devnull 
186 ff3adf60 2004-04-14 devnull 		wlen = 0;
187 ff3adf60 2004-04-14 devnull 		crc = 0;
188 ff3adf60 2004-04-14 devnull 
189 ff3adf60 2004-04-14 devnull 		if(!table && verbose)
190 ff3adf60 2004-04-14 devnull 			fprint(2, "extracting %s to %s\n", h.file, ofile);
191 ff3adf60 2004-04-14 devnull 
192 3ca675a5 2006-04-20 devnull 		err = inflate((void*)(uintptr)ofd, crcwrite, bin, (int(*)(void*))Bgetc);
193 ff3adf60 2004-04-14 devnull 		if(err != FlateOk)
194 ff3adf60 2004-04-14 devnull 			error("inflate failed: %s", flateerr(err));
195 ff3adf60 2004-04-14 devnull 
196 ff3adf60 2004-04-14 devnull 		trailer(bin, wlen);
197 ff3adf60 2004-04-14 devnull 
198 ff3adf60 2004-04-14 devnull 		if(table){
199 ff3adf60 2004-04-14 devnull 			if(verbose)
200 ff3adf60 2004-04-14 devnull 				print("%-32s %10ld %s", h.file, wlen, ctime(h.mtime));
201 ff3adf60 2004-04-14 devnull 			else
202 ff3adf60 2004-04-14 devnull 				print("%s\n", h.file);
203 ff3adf60 2004-04-14 devnull 		}else if(settimes && h.mtime && (d=dirfstat(ofd)) != nil){
204 ff3adf60 2004-04-14 devnull 			d->mtime = h.mtime;
205 ff3adf60 2004-04-14 devnull 			dirfwstat(ofd, d);
206 ff3adf60 2004-04-14 devnull 			free(d);
207 ff3adf60 2004-04-14 devnull 		}
208 ff3adf60 2004-04-14 devnull 
209 ff3adf60 2004-04-14 devnull 		free(h.file);
210 ff3adf60 2004-04-14 devnull 		h.file = nil;
211 ff3adf60 2004-04-14 devnull 		gzok = Boffset(bin);
212 ff3adf60 2004-04-14 devnull 	}
213 d7925b13 2005-01-14 devnull /*	return 0; */
214 ff3adf60 2004-04-14 devnull }
215 ff3adf60 2004-04-14 devnull 
216 ff3adf60 2004-04-14 devnull static void
217 ff3adf60 2004-04-14 devnull header(Biobuf *bin, GZHead *h)
218 ff3adf60 2004-04-14 devnull {
219 ff3adf60 2004-04-14 devnull 	char *s;
220 ff3adf60 2004-04-14 devnull 	int i, c, flag, ns, nsa;
221 ff3adf60 2004-04-14 devnull 
222 ff3adf60 2004-04-14 devnull 	if(get1(bin) != GZMAGIC1 || get1(bin) != GZMAGIC2)
223 ff3adf60 2004-04-14 devnull 		error("bad gzip file magic");
224 ff3adf60 2004-04-14 devnull 	if(get1(bin) != GZDEFLATE)
225 ff3adf60 2004-04-14 devnull 		error("unknown compression type");
226 ff3adf60 2004-04-14 devnull 
227 ff3adf60 2004-04-14 devnull 	flag = get1(bin);
228 ff3adf60 2004-04-14 devnull 	if(flag & ~(GZFTEXT|GZFEXTRA|GZFNAME|GZFCOMMENT|GZFHCRC))
229 ff3adf60 2004-04-14 devnull 		fprint(2, "gunzip: reserved flags set, data may not be decompressed correctly\n");
230 ff3adf60 2004-04-14 devnull 
231 ff3adf60 2004-04-14 devnull 	/* mod time */
232 ff3adf60 2004-04-14 devnull 	h->mtime = get4(bin);
233 ff3adf60 2004-04-14 devnull 
234 ff3adf60 2004-04-14 devnull 	/* extra flags */
235 ff3adf60 2004-04-14 devnull 	get1(bin);
236 ff3adf60 2004-04-14 devnull 
237 ff3adf60 2004-04-14 devnull 	/* OS type */
238 ff3adf60 2004-04-14 devnull 	get1(bin);
239 ff3adf60 2004-04-14 devnull 
240 ff3adf60 2004-04-14 devnull 	if(flag & GZFEXTRA)
241 ff3adf60 2004-04-14 devnull 		for(i=get1(bin); i>0; i--)
242 ff3adf60 2004-04-14 devnull 			get1(bin);
243 ff3adf60 2004-04-14 devnull 
244 ff3adf60 2004-04-14 devnull 	/* name */
245 ff3adf60 2004-04-14 devnull 	if(flag & GZFNAME){
246 ff3adf60 2004-04-14 devnull 		nsa = 32;
247 ff3adf60 2004-04-14 devnull 		ns = 0;
248 ff3adf60 2004-04-14 devnull 		s = malloc(nsa);
249 ff3adf60 2004-04-14 devnull 		if(s == nil)
250 ff3adf60 2004-04-14 devnull 			error("out of memory");
251 ff3adf60 2004-04-14 devnull 		while((c = get1(bin)) != 0){
252 ff3adf60 2004-04-14 devnull 			s[ns++] = c;
253 ff3adf60 2004-04-14 devnull 			if(ns >= nsa){
254 ff3adf60 2004-04-14 devnull 				nsa += 32;
255 ff3adf60 2004-04-14 devnull 				s = realloc(s, nsa);
256 ff3adf60 2004-04-14 devnull 				if(s == nil)
257 ff3adf60 2004-04-14 devnull 					error("out of memory");
258 ff3adf60 2004-04-14 devnull 			}
259 ff3adf60 2004-04-14 devnull 		}
260 ff3adf60 2004-04-14 devnull 		s[ns] = '\0';
261 ff3adf60 2004-04-14 devnull 		h->file = s;
262 ff3adf60 2004-04-14 devnull 	}else
263 ff3adf60 2004-04-14 devnull 		h->file = strdup("<unnamed file>");
264 ff3adf60 2004-04-14 devnull 
265 ff3adf60 2004-04-14 devnull 	/* comment */
266 ff3adf60 2004-04-14 devnull 	if(flag & GZFCOMMENT)
267 ff3adf60 2004-04-14 devnull 		while(get1(bin) != 0)
268 ff3adf60 2004-04-14 devnull 			;
269 ff3adf60 2004-04-14 devnull 
270 ff3adf60 2004-04-14 devnull 	/* crc16 */
271 ff3adf60 2004-04-14 devnull 	if(flag & GZFHCRC){
272 ff3adf60 2004-04-14 devnull 		get1(bin);
273 ff3adf60 2004-04-14 devnull 		get1(bin);
274 ff3adf60 2004-04-14 devnull 	}
275 ff3adf60 2004-04-14 devnull }
276 ff3adf60 2004-04-14 devnull 
277 ff3adf60 2004-04-14 devnull static void
278 ff3adf60 2004-04-14 devnull trailer(Biobuf *bin, long wlen)
279 ff3adf60 2004-04-14 devnull {
280 8425b514 2010-02-23 rsc 	u32int tcrc;
281 ff3adf60 2004-04-14 devnull 	long len;
282 ff3adf60 2004-04-14 devnull 
283 ff3adf60 2004-04-14 devnull 	tcrc = get4(bin);
284 ff3adf60 2004-04-14 devnull 	if(tcrc != crc)
285 ff3adf60 2004-04-14 devnull 		error("crc mismatch");
286 ff3adf60 2004-04-14 devnull 
287 ff3adf60 2004-04-14 devnull 	len = get4(bin);
288 ff3adf60 2004-04-14 devnull 
289 ff3adf60 2004-04-14 devnull 	if(len != wlen)
290 ff3adf60 2004-04-14 devnull 		error("bad output length: expected %lud got %lud", wlen, len);
291 ff3adf60 2004-04-14 devnull }
292 ff3adf60 2004-04-14 devnull 
293 8425b514 2010-02-23 rsc static u32int
294 ff3adf60 2004-04-14 devnull get4(Biobuf *b)
295 ff3adf60 2004-04-14 devnull {
296 8425b514 2010-02-23 rsc 	u32int v;
297 ff3adf60 2004-04-14 devnull 	int i, c;
298 ff3adf60 2004-04-14 devnull 
299 ff3adf60 2004-04-14 devnull 	v = 0;
300 ff3adf60 2004-04-14 devnull 	for(i = 0; i < 4; i++){
301 ff3adf60 2004-04-14 devnull 		c = Bgetc(b);
302 ff3adf60 2004-04-14 devnull 		if(c < 0)
303 ff3adf60 2004-04-14 devnull 			error("unexpected eof reading file information");
304 ff3adf60 2004-04-14 devnull 		v |= c << (i * 8);
305 ff3adf60 2004-04-14 devnull 	}
306 ff3adf60 2004-04-14 devnull 	return v;
307 ff3adf60 2004-04-14 devnull }
308 ff3adf60 2004-04-14 devnull 
309 ff3adf60 2004-04-14 devnull static int
310 ff3adf60 2004-04-14 devnull get1(Biobuf *b)
311 ff3adf60 2004-04-14 devnull {
312 ff3adf60 2004-04-14 devnull 	int c;
313 ff3adf60 2004-04-14 devnull 
314 ff3adf60 2004-04-14 devnull 	c = Bgetc(b);
315 ff3adf60 2004-04-14 devnull 	if(c < 0)
316 ff3adf60 2004-04-14 devnull 		error("unexpected eof reading file information");
317 ff3adf60 2004-04-14 devnull 	return c;
318 ff3adf60 2004-04-14 devnull }
319 ff3adf60 2004-04-14 devnull 
320 ff3adf60 2004-04-14 devnull static int
321 ff3adf60 2004-04-14 devnull crcwrite(void *out, void *buf, int n)
322 ff3adf60 2004-04-14 devnull {
323 ff3adf60 2004-04-14 devnull 	int fd, nw;
324 ff3adf60 2004-04-14 devnull 
325 ff3adf60 2004-04-14 devnull 	wlen += n;
326 ff3adf60 2004-04-14 devnull 	crc = blockcrc(crctab, crc, buf, n);
327 3ca675a5 2006-04-20 devnull 	fd = (int)(uintptr)out;
328 ff3adf60 2004-04-14 devnull 	if(fd < 0)
329 ff3adf60 2004-04-14 devnull 		return n;
330 ff3adf60 2004-04-14 devnull 	nw = write(fd, buf, n);
331 ff3adf60 2004-04-14 devnull 	if(nw != n)
332 ff3adf60 2004-04-14 devnull 		wbad = 1;
333 ff3adf60 2004-04-14 devnull 	return nw;
334 ff3adf60 2004-04-14 devnull }
335 ff3adf60 2004-04-14 devnull 
336 ff3adf60 2004-04-14 devnull static void
337 ff3adf60 2004-04-14 devnull error(char *fmt, ...)
338 ff3adf60 2004-04-14 devnull {
339 ff3adf60 2004-04-14 devnull 	va_list arg;
340 ff3adf60 2004-04-14 devnull 
341 ff3adf60 2004-04-14 devnull 	if(gzok)
342 ff3adf60 2004-04-14 devnull 		fprint(2, "gunzip: %s: corrupted data after byte %lld ignored\n", infile, gzok);
343 ff3adf60 2004-04-14 devnull 	else{
344 ff3adf60 2004-04-14 devnull 		fprint(2, "gunzip: ");
345 ff3adf60 2004-04-14 devnull 		if(infile)
346 ff3adf60 2004-04-14 devnull 			fprint(2, "%s: ", infile);
347 ff3adf60 2004-04-14 devnull 		va_start(arg, fmt);
348 ff3adf60 2004-04-14 devnull 		vfprint(2, fmt, arg);
349 ff3adf60 2004-04-14 devnull 		va_end(arg);
350 ff3adf60 2004-04-14 devnull 		fprint(2, "\n");
351 ff3adf60 2004-04-14 devnull 	
352 ff3adf60 2004-04-14 devnull 		if(delfile != nil){
353 ff3adf60 2004-04-14 devnull 			fprint(2, "gunzip: removing output file %s\n", delfile);
354 ff3adf60 2004-04-14 devnull 			remove(delfile);
355 ff3adf60 2004-04-14 devnull 			delfile = nil;
356 ff3adf60 2004-04-14 devnull 		}
357 ff3adf60 2004-04-14 devnull 	}
358 ff3adf60 2004-04-14 devnull 
359 ff3adf60 2004-04-14 devnull 	longjmp(zjmp, 1);
360 ff3adf60 2004-04-14 devnull }