Use fgetln to remove the static limit on the length of lines in

/etc/exports. Oversized lines were unlikely due to the large 10k
limit, but any found would cause mountd to exit with an error. Also
fix one or two compiler warnings.

1 files changed, 15 insertions, 14 deletions

diff --git a/usr.sbin/mountd/mountd.c b/usr.sbin/mountd/mountd.c
index 3061d2f..b219c76 100644
--- a/usr.sbin/mountd/mountd.c
+++ b/usr.sbin/mountd/mountd.c
@@ -54,6 +54,8 @@ static const char rcsid[] =
 #include <sys/stat.h>
 #include <sys/syslog.h>
 #include <sys/sysctl.h>
+#include <sys/linker.h>
+#include <sys/module.h>
 
 #include <rpc/rpc.h>
 #include <rpc/pmap_clnt.h>
@@ -268,7 +270,7 @@ main(argc, argv)
 	int udpsock, tcpsock, udp6sock, tcp6sock;
 	int xcreated = 0, s;
 	int one = 1;
-	int c, error;
+	int c;
 
 	udp6conf = tcp6conf = NULL;
 	udp6sock = tcp6sock = NULL;
@@ -874,8 +876,8 @@ put_exlist(dp, xdrsp, adp, putdefp)
 	return (0);
 }
 
-#define LINESIZ	10240
-char line[LINESIZ];
+char *line;
+int linesize;
 FILE *exp_file;
 
 /*
@@ -1997,7 +1999,7 @@ int
 get_line()
 {
 	char *p, *cp;
-	int len;
+	size_t len;
 	int totlen, cont_line;
 
 	/*
@@ -2006,9 +2008,8 @@ get_line()
 	p = line;
 	totlen = 0;
 	do {
-		if (fgets(p, LINESIZ - totlen, exp_file) == NULL)
+		if ((p = fgetln(exp_file, &len)) == NULL)
 			return (0);
-		len = strlen(p);
 		cp = p + len - 1;
 		cont_line = 0;
 		while (cp >= p &&
@@ -2022,15 +2023,15 @@ get_line()
 			*++cp = ' ';
 			len++;
 		}
-		*++cp = '\0';
-		if (len > 0) {
-			totlen += len;
-			if (totlen >= LINESIZ) {
-				syslog(LOG_ERR, "exports line too long");
-				exit(2);
-			}
-			p = cp;
+		if (linesize < len + totlen + 1) {
+			linesize = len + totlen + 1;
+			line = realloc(line, linesize);
+			if (line == NULL)
+				out_of_mem();
 		}
+		memcpy(line + totlen, p, len);
+		totlen += len;
+		line[totlen] = '\0';
 	} while (totlen == 0 || cont_line);
 	return (1);
 }