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authorChris Luke <chrisy@flirble.org>2016-07-07 11:01:17 -0400
committerDamjan Marion <dmarion.lists@gmail.com>2016-07-08 09:41:03 +0000
commit370e9e38e8e0b35810734125e2b6eeac65fefa5d (patch)
treed60f56163bd9fa8397a20b18a801f6ec1d92e17e /svm
parentce3e971bab3a67b5d484294f5cfd3d270c76bc38 (diff)
VPP-189 Some bugfixes for issues reported by Coverity
CID 130914 Buffer not null terminated CID 130916 Unchecked return value CID 130938 Unchecked return value from library CID 130939 Unchecked return value from library CID 130940 Unchecked return value from library CID 131042 Argument cannot be negative CID 131222 Resource leak CID 131223 Resource leak CID 131334 Double close CID 131335 Read from pointer after free CID 131211 Resource leak CID 131212 Resource leak Change-Id: Idd80b91f621278e0be15911f2ed4354dbe4fc7f2 Signed-off-by: Chris Luke <chrisy@flirble.org>
Diffstat (limited to 'svm')
-rw-r--r--svm/svm.c45
1 files changed, 37 insertions, 8 deletions
diff --git a/svm/svm.c b/svm/svm.c
index b50aa8207ef..e62f3f839fd 100644
--- a/svm/svm.c
+++ b/svm/svm.c
@@ -225,14 +225,22 @@ static int svm_data_region_create (svm_map_region_args_t *a,
if (fstat(fd, &statb) < 0) {
clib_unix_warning("fstat");
+ close (fd);
return -2;
}
if (statb.st_mode & S_IFREG) {
if (statb.st_size == 0) {
- lseek(fd, map_size, SEEK_SET);
- if (write(fd, &junk, 1) != 1)
+ if (lseek(fd, map_size, SEEK_SET) == (off_t) -1) {
+ clib_unix_warning ("seek region size");
+ close (fd);
+ return -3;
+ }
+ if (write(fd, &junk, 1) != 1) {
clib_unix_warning ("set region size");
+ close (fd);
+ return -3;
+ }
} else {
map_size = rnd_pagesize (statb.st_size);
}
@@ -246,6 +254,7 @@ static int svm_data_region_create (svm_map_region_args_t *a,
if (mmap (rp->data_base, map_size, PROT_READ | PROT_WRITE,
MAP_SHARED | MAP_FIXED, fd, 0) == MAP_FAILED) {
clib_unix_warning("mmap");
+ close (fd);
return -3;
}
close(fd);
@@ -283,14 +292,22 @@ static int svm_data_region_map (svm_map_region_args_t *a,
if (fstat(fd, &statb) < 0) {
clib_unix_warning("fstat");
+ close (fd);
return -2;
}
if (statb.st_mode & S_IFREG) {
if (statb.st_size == 0) {
- lseek(fd, map_size, SEEK_SET);
- if (write(fd, &junk, 1) != 1)
+ if (lseek(fd, map_size, SEEK_SET) == (off_t) -1) {
+ clib_unix_warning ("seek region size");
+ close (fd);
+ return -3;
+ }
+ if (write(fd, &junk, 1) != 1) {
clib_unix_warning ("set region size");
+ close (fd);
+ return -3;
+ }
} else {
map_size = rnd_pagesize (statb.st_size);
}
@@ -304,6 +321,7 @@ static int svm_data_region_map (svm_map_region_args_t *a,
if (mmap (rp->data_base, map_size, PROT_READ | PROT_WRITE,
MAP_SHARED | MAP_FIXED, fd, 0) == MAP_FAILED) {
clib_unix_warning("mmap");
+ close (fd);
return -3;
}
close(fd);
@@ -399,15 +417,23 @@ void *svm_map_region (svm_map_region_args_t *a)
vec_free(shm_name);
- lseek(svm_fd, a->size, SEEK_SET);
- if (write(svm_fd, &junk, 1) != 1)
+ if (lseek(svm_fd, a->size, SEEK_SET) == (off_t) -1) {
+ clib_warning ("seek region size");
+ close (svm_fd);
+ return (0);
+ }
+ if (write(svm_fd, &junk, 1) != 1) {
clib_warning ("set region size");
+ close (svm_fd);
+ return (0);
+ }
rp = mmap((void *)a->baseva, a->size,
PROT_READ | PROT_WRITE, MAP_SHARED | MAP_FIXED, svm_fd, 0);
if (rp == (svm_region_t *) MAP_FAILED) {
clib_unix_warning ("mmap create");
+ close (svm_fd);
return (0);
}
close(svm_fd);
@@ -509,6 +535,7 @@ void *svm_map_region (svm_map_region_args_t *a)
while (1) {
if (0 != fstat(svm_fd, &stat)) {
clib_warning("fstat failed: %d", errno);
+ close (svm_fd);
return (0);
}
if (stat.st_size > 0) {
@@ -516,6 +543,7 @@ void *svm_map_region (svm_map_region_args_t *a)
}
if (0 == time_left) {
clib_warning("waiting for resize of shm file timed out");
+ close (svm_fd);
return (0);
}
ts.tv_sec = 0;
@@ -545,10 +573,10 @@ void *svm_map_region (svm_map_region_args_t *a)
* <bleep>-ed?
*/
if (rp->version == 0) {
- close(svm_fd);
- munmap(rp, a->size);
clib_warning("rp->version %d not %d", rp->version,
SVM_VERSION);
+ close(svm_fd);
+ munmap(rp, a->size);
return (0);
}
/* Remap now that the region has been placed */
@@ -561,6 +589,7 @@ void *svm_map_region (svm_map_region_args_t *a)
MAP_SHARED | MAP_FIXED, svm_fd, 0);
if ((uword)rp == (uword)MAP_FAILED) {
clib_unix_warning ("mmap");
+ close (svm_fd);
return (0);
}