Virgin import of Christos Zoulas's FILE 5.09.

1 files changed, 29 insertions, 17 deletions

diff --git a/compress.c b/compress.c
index 28dacd3..b82ab7b 100644
--- a/compress.c
+++ b/compress.c
@@ -35,7 +35,7 @@
 #include "file.h"
 
 #ifndef lint
-FILE_RCSID("@(#)$File: compress.c,v 1.63 2009/03/23 14:21:51 christos Exp $")
+FILE_RCSID("@(#)$File: compress.c,v 1.67 2011/09/01 12:12:37 christos Exp $")
 #endif
 
 #include "magic.h"
@@ -45,7 +45,9 @@ FILE_RCSID("@(#)$File: compress.c,v 1.63 2009/03/23 14:21:51 christos Exp $")
 #endif
 #include <string.h>
 #include <errno.h>
+#ifndef __MINGW32__
 #include <sys/ioctl.h>
+#endif
 #ifdef HAVE_SYS_WAIT_H
 #include <sys/wait.h>
 #endif
@@ -77,14 +79,14 @@ private const struct {
 	{ "BZh",      3, { "bzip2", "-cd", NULL }, 1 },		/* bzip2-ed */
 	{ "LZIP",     4, { "lzip", "-cdq", NULL }, 1 },
  	{ "\3757zXZ\0",6,{ "xz", "-cd", NULL }, 1 },		/* XZ Utils */
+ 	{ "LRZI",     4, { "lrzip", "-dqo-", NULL }, 1 },	/* LRZIP */
 };
 
-private size_t ncompr = sizeof(compr) / sizeof(compr[0]);
-
 #define NODATA ((size_t)~0)
 
-
 private ssize_t swrite(int, const void *, size_t);
+#if HAVE_FORK
+private size_t ncompr = sizeof(compr) / sizeof(compr[0]);
 private size_t uncompressbuf(struct magic_set *, int, size_t,
     const unsigned char *, unsigned char **, size_t);
 #ifdef BUILTIN_DECOMPRESS
@@ -137,14 +139,14 @@ error:
 	ms->flags |= MAGIC_COMPRESS;
 	return rv;
 }
-
+#endif
 /*
  * `safe' write for sockets and pipes.
  */
 private ssize_t
 swrite(int fd, const void *buf, size_t n)
 {
-	int rv;
+	ssize_t rv;
 	size_t rn = n;
 
 	do
@@ -155,7 +157,7 @@ swrite(int fd, const void *buf, size_t n)
 			return -1;
 		default:
 			n -= rv;
-			buf = ((const char *)buf) + rv;
+			buf = CAST(const char *, buf) + rv;
 			break;
 		}
 	while (n > 0);
@@ -167,9 +169,12 @@ swrite(int fd, const void *buf, size_t n)
  * `safe' read for sockets and pipes.
  */
 protected ssize_t
-sread(int fd, void *buf, size_t n, int canbepipe)
+sread(int fd, void *buf, size_t n, int canbepipe __attribute__ ((unused)))
 {
-	int rv, cnt;
+	ssize_t rv;
+#ifdef FD_ZERO
+	ssize_t cnt;
+#endif
 #ifdef FIONREAD
 	int t = 0;
 #endif
@@ -235,7 +240,11 @@ file_pipe2file(struct magic_set *ms, int fd, const void *startbuf,
     size_t nbytes)
 {
 	char buf[4096];
-	int r, tfd;
+	ssize_t r;
+	int tfd;
+#ifdef HAVE_MKSTEMP
+	int te;
+#endif
 
 	(void)strlcpy(buf, "/tmp/file.XXXXXX", sizeof buf);
 #ifndef HAVE_MKSTEMP
@@ -248,9 +257,9 @@ file_pipe2file(struct magic_set *ms, int fd, const void *startbuf,
 	}
 #else
 	tfd = mkstemp(buf);
-	r = errno;
+	te = errno;
 	(void)unlink(buf);
-	errno = r;
+	errno = te;
 #endif
 	if (tfd == -1) {
 		file_error(ms, errno,
@@ -293,7 +302,7 @@ file_pipe2file(struct magic_set *ms, int fd, const void *startbuf,
 	}
 	return fd;
 }
-
+#if HAVE_FORK
 #ifdef BUILTIN_DECOMPRESS
 
 #define FHCRC		(1 << 1)
@@ -337,13 +346,14 @@ uncompressgzipped(struct magic_set *ms, const unsigned char *old,
 	/* XXX: const castaway, via strchr */
 	z.next_in = (Bytef *)strchr((const char *)old + data_start,
 	    old[data_start]);
-	z.avail_in = n - data_start;
+	z.avail_in = CAST(uint32_t, (n - data_start));
 	z.next_out = *newch;
 	z.avail_out = HOWMANY;
 	z.zalloc = Z_NULL;
 	z.zfree = Z_NULL;
 	z.opaque = Z_NULL;
 
+	/* LINTED bug in header macro */
 	rc = inflateInit2(&z, -15);
 	if (rc != Z_OK) {
 		file_error(ms, 0, "zlib: %s", z.msg);
@@ -371,7 +381,8 @@ uncompressbuf(struct magic_set *ms, int fd, size_t method,
     const unsigned char *old, unsigned char **newch, size_t n)
 {
 	int fdin[2], fdout[2];
-	int r;
+	ssize_t r;
+	pid_t pid;
 
 #ifdef BUILTIN_DECOMPRESS
         /* FIXME: This doesn't cope with bzip2 */
@@ -385,7 +396,7 @@ uncompressbuf(struct magic_set *ms, int fd, size_t method,
 		file_error(ms, errno, "cannot create pipe");	
 		return NODATA;
 	}
-	switch (fork()) {
+	switch (pid = fork()) {
 	case 0:	/* child */
 		(void) close(0);
 		if (fd != -1) {
@@ -482,7 +493,7 @@ err:
 			(void) close(fdin[1]);
 		(void) close(fdout[0]);
 #ifdef WNOHANG
-		while (waitpid(-1, NULL, WNOHANG) != -1)
+		while (waitpid(pid, NULL, WNOHANG) != -1)
 			continue;
 #else
 		(void)wait(NULL);
@@ -492,3 +503,4 @@ err:
 		return n;
 	}
 }
+#endif