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mdbx: fix/model minor Coverity issues.

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This commit is contained in:
Leonid Yuriev
2021-08-16 23:45:56 +03:00
parent 42d545e579
commit 99b75b5004
3 changed files with 8 additions and 0 deletions
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5
src/osal.c
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@@ -1781,6 +1781,7 @@ retry_mapview:;
if (limit < map->limit) {
/* unmap an excess at end of mapping. */
// coverity[offset_free : FALSE]
if (unlikely(munmap(map->dxb + limit, map->limit - limit)))
return errno;
map->limit = limit;
@@ -1854,6 +1855,7 @@ retry_mapview:;
if (unlikely(munmap(map->address, map->limit)))
return errno;
// coverity[pass_freed_arg : FALSE]
ptr = mmap(map->address, limit, mmap_prot,
(flags & MDBX_MRESIZE_MAY_MOVE)
? mmap_flags
@@ -1863,11 +1865,13 @@ retry_mapview:;
if (MAP_FIXED_NOREPLACE != 0 && MAP_FIXED_NOREPLACE != MAP_FIXED &&
unlikely(ptr == MAP_FAILED) && !(flags & MDBX_MRESIZE_MAY_MOVE) &&
errno == /* kernel don't support MAP_FIXED_NOREPLACE */ EINVAL)
// coverity[pass_freed_arg : FALSE]
ptr = mmap(map->address, limit, mmap_prot, mmap_flags | MAP_FIXED,
map->fd, 0);
if (unlikely(ptr == MAP_FAILED)) {
/* try to restore prev mapping */
// coverity[pass_freed_arg : FALSE]
ptr = mmap(map->address, map->limit, mmap_prot,
(flags & MDBX_MRESIZE_MAY_MOVE)
? mmap_flags
@@ -1877,6 +1881,7 @@ retry_mapview:;
if (MAP_FIXED_NOREPLACE != 0 && MAP_FIXED_NOREPLACE != MAP_FIXED &&
unlikely(ptr == MAP_FAILED) && !(flags & MDBX_MRESIZE_MAY_MOVE) &&
errno == /* kernel don't support MAP_FIXED_NOREPLACE */ EINVAL)
// coverity[pass_freed_arg : FALSE]
ptr = mmap(map->address, map->limit, mmap_prot, mmap_flags | MAP_FIXED,
map->fd, 0);
if (unlikely(ptr == MAP_FAILED)) {