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PF mmap: disallow 0 size

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Rafał Wojdyła
2020-01-08 16:08:32 +01:00
parent 501e2d1d65
commit ef677309f4
1 changed files with 4 additions and 0 deletions
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Pal/src/host/Linux-SGX/db_files.c
+4
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@@ -349,6 +349,10 @@ static int file_delete(PAL_HANDLE handle, int access) {
static int pf_file_map(struct protected_file* pf, PAL_HANDLE handle, void** addr, int prot,
uint64_t offset, uint64_t size) {
int fd = handle->file.fd;
if (size == 0)
return -PAL_ERROR_INVAL;
if ((prot & PAL_PROT_READ) && (prot & PAL_PROT_WRITE)) {
SGX_DBG(DBG_E, "file_map(PF fd %d): trying to map with R+W access\n", fd);
return -PAL_ERROR_NOTSUPPORT;