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authorAnders Johansson <ajohansson@novell.com>2009-10-29 22:18:26 -0700
committerUlrich Drepper <drepper@redhat.com>2009-10-29 22:18:26 -0700
commitea547a1a6e350b758fcda76b919b3aa774752318 (patch)
treed78a3f57c05349de4f423eb36cef97f08f83bc77
parent5c53736b52d5032171813d813d4a7ad505102b61 (diff)
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Fix a few asserts and IO calls in nscd.
The nscd/*cache.c files contain assert()s, writeall() and sendfileall() calls that invalidly use together &dataset->resp and total where either dataset or dataset->head.recsize should be used instead one of the components. In the writeall() and sendfileall() cases, it is unlikely to matter in practice, but the assertions can fail sometimes without a proper reason.
-rw-r--r--ChangeLog9
-rw-r--r--nscd/aicache.c6
-rw-r--r--nscd/grpcache.c6
-rw-r--r--nscd/hstcache.c2
-rw-r--r--nscd/initgrcache.c6
-rw-r--r--nscd/pwdcache.c6
6 files changed, 22 insertions, 13 deletions
diff --git a/ChangeLog b/ChangeLog
index 3fae505586..47241cc9ae 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2009-08-18 Anders Johansson <ajohansson@novell.com>
+
+ * nscd/aicache.c: Fix mixing up dataset and dataset->resp
+ offsets and record sizes in assert()s and response sending.
+ * nscd/grpcache.c: Likewise.
+ * nscd/hstcache.c: Likewise.
+ * nscd/initgrcache.c: Likewise.
+ * nscd/pwdcache.c: Likewise.
+
2009-10-29 Ulrich Drepper <drepper@redhat.com>
[BZ #10540]
diff --git a/nscd/aicache.c b/nscd/aicache.c
index 524c0a63af..992357d2fe 100644
--- a/nscd/aicache.c
+++ b/nscd/aicache.c
@@ -453,13 +453,13 @@ addhstaiX (struct database_dyn *db, int fd, request_header *req,
{
assert (db->wr_fd != -1);
assert ((char *) &dataset->resp > (char *) db->data);
- assert ((char *) &dataset->resp - (char *) db->head + total
+ assert ((char *) dataset - (char *) db->head + total
<= (sizeof (struct database_pers_head)
+ db->head->module * sizeof (ref_t)
+ db->head->data_size));
ssize_t written;
written = sendfileall (fd, db->wr_fd, (char *) &dataset->resp
- - (char *) db->head, total);
+ - (char *) db->head, dataset->head.recsize);
# ifndef __ASSUME_SENDFILE
if (written == -1 && errno == ENOSYS)
goto use_write;
@@ -470,7 +470,7 @@ addhstaiX (struct database_dyn *db, int fd, request_header *req,
use_write:
# endif
#endif
- writeall (fd, &dataset->resp, total);
+ writeall (fd, &dataset->resp, dataset->head.recsize);
}
goto out;
diff --git a/nscd/grpcache.c b/nscd/grpcache.c
index 184d53898c..bd101c675d 100644
--- a/nscd/grpcache.c
+++ b/nscd/grpcache.c
@@ -295,14 +295,14 @@ cache_addgr (struct database_dyn *db, int fd, request_header *req,
{
assert (db->wr_fd != -1);
assert ((char *) &dataset->resp > (char *) db->data);
- assert ((char *) &dataset->resp - (char *) db->head
+ assert ((char *) dataset - (char *) db->head
+ total
<= (sizeof (struct database_pers_head)
+ db->head->module * sizeof (ref_t)
+ db->head->data_size));
written = sendfileall (fd, db->wr_fd,
(char *) &dataset->resp
- - (char *) db->head, total);
+ - (char *) db->head, dataset->head.recsize);
# ifndef __ASSUME_SENDFILE
if (written == -1 && errno == ENOSYS)
goto use_write;
@@ -313,7 +313,7 @@ cache_addgr (struct database_dyn *db, int fd, request_header *req,
use_write:
# endif
#endif
- written = writeall (fd, &dataset->resp, total);
+ written = writeall (fd, &dataset->resp, dataset->head.recsize);
}
/* Add the record to the database. But only if it has not been
diff --git a/nscd/hstcache.c b/nscd/hstcache.c
index 51e2273960..228f6fd8ab 100644
--- a/nscd/hstcache.c
+++ b/nscd/hstcache.c
@@ -337,7 +337,7 @@ cache_addhst (struct database_dyn *db, int fd, request_header *req,
{
assert (db->wr_fd != -1);
assert ((char *) &dataset->resp > (char *) db->data);
- assert ((char *) &dataset->resp - (char *) db->head
+ assert ((char *) dataset - (char *) db->head
+ total
<= (sizeof (struct database_pers_head)
+ db->head->module * sizeof (ref_t)
diff --git a/nscd/initgrcache.c b/nscd/initgrcache.c
index c33aaf315f..8195b6609e 100644
--- a/nscd/initgrcache.c
+++ b/nscd/initgrcache.c
@@ -350,14 +350,14 @@ addinitgroupsX (struct database_dyn *db, int fd, request_header *req,
{
assert (db->wr_fd != -1);
assert ((char *) &dataset->resp > (char *) db->data);
- assert ((char *) &dataset->resp - (char *) db->head
+ assert ((char *) dataset - (char *) db->head
+ total
<= (sizeof (struct database_pers_head)
+ db->head->module * sizeof (ref_t)
+ db->head->data_size));
written = sendfileall (fd, db->wr_fd,
(char *) &dataset->resp
- - (char *) db->head, total);
+ - (char *) db->head, dataset->head.recsize);
# ifndef __ASSUME_SENDFILE
if (written == -1 && errno == ENOSYS)
goto use_write;
@@ -368,7 +368,7 @@ addinitgroupsX (struct database_dyn *db, int fd, request_header *req,
use_write:
# endif
#endif
- written = writeall (fd, &dataset->resp, total);
+ written = writeall (fd, &dataset->resp, dataset->head.recsize);
}
diff --git a/nscd/pwdcache.c b/nscd/pwdcache.c
index 2338e7e1e0..75f2221e88 100644
--- a/nscd/pwdcache.c
+++ b/nscd/pwdcache.c
@@ -290,14 +290,14 @@ cache_addpw (struct database_dyn *db, int fd, request_header *req,
{
assert (db->wr_fd != -1);
assert ((char *) &dataset->resp > (char *) db->data);
- assert ((char *) &dataset->resp - (char *) db->head
+ assert ((char *) dataset - (char *) db->head
+ total
<= (sizeof (struct database_pers_head)
+ db->head->module * sizeof (ref_t)
+ db->head->data_size));
written = sendfileall (fd, db->wr_fd,
(char *) &dataset->resp
- - (char *) db->head, total);
+ - (char *) db->head, dataset->head.recsize );
# ifndef __ASSUME_SENDFILE
if (written == -1 && errno == ENOSYS)
goto use_write;
@@ -308,7 +308,7 @@ cache_addpw (struct database_dyn *db, int fd, request_header *req,
use_write:
# endif
#endif
- written = writeall (fd, &dataset->resp, total);
+ written = writeall (fd, &dataset->resp, dataset->head.recsize);
}