Author: kib
Date: Fri Dec 20 01:00:18 2019
New Revision: 355919
URL: https://svnweb.freebsd.org/changeset/base/355919
Log:
MFC r355676:
rtld: make checks for mmap(2) failures compliant with documentation.
Modified:
stable/12/libexec/rtld-elf/map_object.c
Directory Properties:
stable/12/ (props changed)
Modified: stable/12/libexec/rtld-elf/map_object.c
==============================================================================
--- stable/12/libexec/rtld-elf/map_object.c Fri Dec 20 00:25:56 2019
(r355918)
+++ stable/12/libexec/rtld-elf/map_object.c Fri Dec 20 01:00:18 2019
(r355919)
@@ -203,7 +203,7 @@ map_object(int fd, const char *path, const struct stat
base_flags |= MAP_FIXED | MAP_EXCL;
mapbase = mmap(base_addr, mapsize, PROT_NONE, base_flags, -1, 0);
- if (mapbase == (caddr_t) -1) {
+ if (mapbase == MAP_FAILED) {
_rtld_error("%s: mmap of entire address space failed: %s",
path, rtld_strerror(errno));
goto error;
@@ -259,7 +259,7 @@ map_object(int fd, const char *path, const struct stat
bss_addr = mapbase + (bss_vaddr - base_vaddr);
if (bss_vlimit > bss_vaddr) { /* There is something to do */
if (mmap(bss_addr, bss_vlimit - bss_vaddr, data_prot,
- data_flags | MAP_ANON, -1, 0) == (caddr_t)-1) {
+ data_flags | MAP_ANON, -1, 0) == MAP_FAILED) {
_rtld_error("%s: mmap of bss failed: %s", path,
rtld_strerror(errno));
goto error1;
@@ -343,7 +343,7 @@ get_elf_header(int fd, const char *path, const struct
hdr = mmap(NULL, PAGE_SIZE, PROT_READ, MAP_PRIVATE | MAP_PREFAULT_READ,
fd, 0);
- if (hdr == (Elf_Ehdr *)MAP_FAILED) {
+ if (hdr == MAP_FAILED) {
_rtld_error("%s: read error: %s", path, rtld_strerror(errno));
return (NULL);
}
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