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

3 files changed, 8 insertions, 5 deletions

diff --git a/main.c b/main.c
index 42d48cf7..e884a636 100644
--- a/main.c
+++ b/main.c
@@ -170,6 +170,7 @@ static	const char * const	mandocerrs[MANDOCERR_MAX] = {
 	"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[MANDOCERR_MAX] = {
 	"NOT IMPLEMENTED: .so with absolute path or \"..\"",
 	"no document body",
 	"no document prologue",
-	"utsname system call failed",
 	"static buffer exhausted",
 };
 
diff --git a/mandoc.h b/mandoc.h
index 6d7f0136..de4eedb1 100644
--- a/mandoc.h
+++ b/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
 };
diff --git a/mdoc_validate.c b/mdoc_validate.c
index b728d52f..fa9f3e13 100644
--- a/mdoc_validate.c
+++ b/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);
 		}