Avoid strerror() when possible and just rely on warning/error

to handle errno in the proper locale.

plugins/sudoers/find_path.c

@@ -65,8 +65,10 @@ find_path(char *infile, char **outfile, struct stat *sbp, char *path,
     int len;			/* length parameter */
     debug_decl(find_path, SUDO_DEBUG_UTIL)
 
-    if (strlen(infile) >= PATH_MAX)
-	errorx(1, _("%s: %s"), infile, strerror(ENAMETOOLONG));
+    if (strlen(infile) >= PATH_MAX) {
+	errno = ENAMETOOLONG;
+	error(1, "%s", infile);
+    }
 
     /*
      * If we were given a fully qualified or relative path
@@ -104,8 +106,10 @@ find_path(char *infile, char **outfile, struct stat *sbp, char *path,
 	 * Resolve the path and exit the loop if found.
 	 */
 	len = snprintf(command, sizeof(command), "%s/%s", path, infile);
-	if (len <= 0 || len >= sizeof(command))
-	    errorx(1, _("%s: %s"), infile, strerror(ENAMETOOLONG));
+	if (len <= 0 || len >= sizeof(command)) {
+	    errno = ENAMETOOLONG;
+	    error(1, "%s", infile);
+	}
 	if ((found = sudo_goodpath(command, sbp)))
 	    break;
 
@@ -119,8 +123,10 @@ find_path(char *infile, char **outfile, struct stat *sbp, char *path,
      */
     if (!found && checkdot) {
 	len = snprintf(command, sizeof(command), "./%s", infile);
-	if (len <= 0 || len >= sizeof(command))
-	    errorx(1, _("%s: %s"), infile, strerror(ENAMETOOLONG));
+	if (len <= 0 || len >= sizeof(command)) {
+	    errno = ENAMETOOLONG;
+	    error(1, "%s", infile);
+	}
 	found = sudo_goodpath(command, sbp);
 	if (found && ignore_dot)
 	    debug_return_int(NOT_FOUND_DOT);

plugins/sudoers/group_plugin.c

@@ -88,9 +88,9 @@ group_plugin_load(char *plugin_info)
 	    (*plugin_info != '/') ? _PATH_SUDO_PLUGIN_DIR : "", plugin_info);
     }
     if (len <= 0 || len >= sizeof(path)) {
-	warningx(N_("%s%s: %s"),
-	    (*plugin_info != '/') ? _PATH_SUDO_PLUGIN_DIR : "", plugin_info,
-	    strerror(ENAMETOOLONG));
+	errno = ENAMETOOLONG;
+	warning("%s%s",
+	    (*plugin_info != '/') ? _PATH_SUDO_PLUGIN_DIR : "", plugin_info);
 	goto done;
     }
 

plugins/sudoers/iolog.c

@@ -121,7 +121,8 @@ mkdir_parents(char *path)
 	    if (mkdir(path, S_IRWXU) != 0)
 		log_fatal(USE_ERRNO, N_("unable to mkdir %s"), path);
 	} else if (!S_ISDIR(sb.st_mode)) {
-	    log_fatal(0, N_("%s: %s"), path, strerror(ENOTDIR));
+	    errno = ENOTDIR;
+	    log_fatal(USE_ERRNO, "%s", path);
 	}
 	*slash = '/';
     }

plugins/sudoers/policy.c

@@ -40,6 +40,7 @@
 #ifdef HAVE_UNISTD_H
 # include <unistd.h>
 #endif /* HAVE_UNISTD_H */
+#include <errno.h>
 #include <grp.h>
 #include <pwd.h>
 #include <setjmp.h>
@@ -493,8 +494,10 @@ sudoers_policy_close(int exit_status, int error_code)
     }
 
     /* We do not currently log the exit status. */
-    if (error_code)
-	warningx(N_("unable to execute %s: %s"), safe_cmnd, strerror(error_code));
+    if (error_code) {
+	errno = error_code;
+	warning(N_("unable to execute %s"), safe_cmnd);
+    }
 
     /* Close the session we opened in sudoers_policy_init_session(). */
     if (ISSET(sudo_mode, MODE_RUN|MODE_EDIT))

plugins/sudoers/sudoers.c

@@ -685,8 +685,10 @@ set_cmnd(void)
 	    }
 	}
     }
-    if (strlen(user_cmnd) >= PATH_MAX)
-	errorx(1, _("%s: %s"), user_cmnd, strerror(ENAMETOOLONG));
+    if (strlen(user_cmnd) >= PATH_MAX) {
+	errno = ENAMETOOLONG;
+	error(1, "%s", user_cmnd);
+    }
 
     if ((user_base = strrchr(user_cmnd, '/')) != NULL)
 	user_base++;

plugins/sudoers/timestamp.c

@@ -400,8 +400,7 @@ remove_timestamp(bool remove)
 		status = rmdir(timestampdir);
 	    if (status == -1 && errno != ENOENT) {
 		log_error(0,
-		    N_("unable to remove %s (%s), will reset to the epoch"),
-		    path, strerror(errno));
+		    N_("unable to remove %s, will reset to the epoch"), path);
 		remove = false;
 	    }
 	}