mdocml: Merge schwarze@'s patch to allow uname() to fail without causing

mdocml: Merge schwarze@'s patch to allow uname() to fail without causing

[kristaps]

Log Message:
-----------
Merge schwarze@'s patch to allow uname() to fail without causing an exit.

Modified Files:
--------------
    mdocml:
        main.c
        mandoc.h
        mdoc_validate.c

Revision Data
-------------
Index: mdoc_validate.c
===================================================================
RCS file: /usr/vhosts/mdocml.bsd.lv/cvs/mdocml/mdoc_validate.c,v
retrieving revision 1.135
retrieving revision 1.136
diff -Lmdoc_validate.c -Lmdoc_validate.c -u -p -r1.135 -r1.136
--- mdoc_validate.c
+++ mdoc_validate.c
@@ -2130,14 +2130,17 @@ post_os(POST_ARGS)
 			return(0);
 		}
 #else /*!OSNAME */
-		if (-1 == uname(&utsname))
-			return(mdoc_nmsg(mdoc, n, MANDOCERR_UTSNAME));
+		if (uname(&utsname)) {
+			mdoc_nmsg(mdoc, n, MANDOCERR_UNAME);
+                        mdoc->meta.os = mandoc_strdup("UNKNOWN");
+                        return(post_prol(mdoc));
+                }
 
 		if (strlcat(buf, utsname.sysname, BUFSIZ) >= BUFSIZ) {
 			mdoc_nmsg(mdoc, n, MANDOCERR_MEM);
 			return(0);
 		}
-		if (strlcat(buf, " ", 64) >= BUFSIZ) {
+		if (strlcat(buf, " ", BUFSIZ) >= BUFSIZ) {
 			mdoc_nmsg(mdoc, n, MANDOCERR_MEM);
 			return(0);
 		}
Index: mandoc.h
===================================================================
RCS file: /usr/vhosts/mdocml.bsd.lv/cvs/mdocml/mandoc.h,v
retrieving revision 1.27
retrieving revision 1.28
diff -Lmandoc.h -Lmandoc.h -u -p -r1.27 -r1.28
--- mandoc.h
+++ mandoc.h
@@ -93,6 +93,7 @@ enum	mandocerr {
 	MANDOCERR_NOSCOPE, /* no such block is open */
 	MANDOCERR_SCOPEREP, /* scope already open */
 	MANDOCERR_SCOPEEXIT, /* scope open on exit */
+	MANDOCERR_UNAME, /* uname(3) system call failed */
 	/* FIXME: merge following with MANDOCERR_ARGCOUNT */
 	MANDOCERR_NOARGS, /* macro requires line argument(s) */
 	MANDOCERR_NOBODY, /* macro requires body argument(s) */
@@ -117,7 +118,6 @@ enum	mandocerr {
 	MANDOCERR_SOPATH, /* NOT IMPLEMENTED: .so with absolute path or ".." */
 	MANDOCERR_NODOCBODY, /* no document body */
 	MANDOCERR_NODOCPROLOG, /* no document prologue */
-	MANDOCERR_UTSNAME, /* utsname system call failed */
 	MANDOCERR_MEM, /* static buffer exhausted */
 	MANDOCERR_MAX
 };
Index: main.c
===================================================================
RCS file: /usr/vhosts/mdocml.bsd.lv/cvs/mdocml/main.c,v
retrieving revision 1.116
retrieving revision 1.117
diff -Lmain.c -Lmain.c -u -p -r1.116 -r1.117
--- main.c
+++ main.c
@@ -170,6 +170,7 @@ static	const char * const	mandocerrs[MAN
 	"request scope close w/none open",
 	"scope already open",
 	"scope open on exit",
+	"uname(3) system call failed",
 	"macro requires line argument(s)",
 	"macro requires body argument(s)",
 	"macro requires argument(s)",
@@ -194,7 +195,6 @@ static	const char * const	mandocerrs[MAN
 	"NOT IMPLEMENTED: .so with absolute path or \"..\"",
 	"no document body",
 	"no document prologue",
-	"utsname system call failed",
 	"static buffer exhausted",
 };
 
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