authdb: report errors in authdb_me_open

1 files changed, 16 insertions, 3 deletions

diff --git a/src/authdb.c b/src/authdb.c
index a329d8b..c9a5dd3 100644
--- a/src/authdb.c
+++ b/src/authdb.c
@@ -8,12 +8,15 @@
 #include <ctype.h>
 #include <time.h>
 #include <grp.h>
+#include <errno.h>
+#include <string.h>
 
 #include "config.h"
 #include "authdb.h"
 #include "filterdb.h"
 #include "addr.h"
 #include "blob.h"
+#include "reporting.h"
 
 #define ALIGN(s,a)		(((s) + a - 1) & ~(a - 1))
 
@@ -38,17 +41,22 @@ static struct authdb_map_entry *authdb_me_open(sockaddr_any *addr, int create)
 		oflag |= O_CREAT;
 
 	fd = shm_open(name, oflag, 0660);
-	if (fd < 0)
+	if (fd < 0) {
+		report_error("Couldn't create shared memory object. Error: %s\n", strerror(errno));
 		return NULL;
+	}
 
 	if (ftruncate(fd, AUTHDB_SHM_SIZE) < 0) {
 		close(fd);
+		report_error("Couldn't truncate shared memory object. Error: %s\n", strerror(errno));
 		return NULL;
 	}
 
 	getgrnam_r("squark", &grp, buf, sizeof(buf), &res);
 	if (res != NULL) {
-		fchown(fd, -1, res->gr_gid);
+		if (fchown(fd, -1, res->gr_gid) < 0)
+			report_error("Couldn't set group ownership of shared memory object. Error: %s\n",
+				strerror(errno));
 		fchmod(fd, 0660);
 	}
 
@@ -56,12 +64,17 @@ static struct authdb_map_entry *authdb_me_open(sockaddr_any *addr, int create)
 		    PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
 	close(fd);
 
-	if (base == MAP_FAILED)
+	if (base == MAP_FAILED) {
+		report_error("Couldn't map shared memory object into address space. Error: %s\n",
+			strerror(errno));
 		return NULL;
+	}
 
 	me = malloc(sizeof(*me));
 	if (me == NULL) {
 		munmap(base, AUTHDB_SHM_SIZE);
+		report_error("Couldn't allocate memory for authentication database entry. Error: %s\n",
+			strerror(errno));
 		return NULL;
 	}