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authorjohannst <johannes.stoelp@gmail.com>2021-05-05 21:54:27 +0200
committerjohannst <johannes.stoelp@gmail.com>2021-05-05 21:54:27 +0200
commit279eeb199a20812068d4091be0652c8ba85fcba5 (patch)
tree9a95fb4e3c589e0e9bb829dffaea6e142659c872 /04_dynld_nostd/dynld.c
parentad221d0a353cf3c9e7d660dd1a64aea7dd906cd0 (diff)
downloaddynld-279eeb199a20812068d4091be0652c8ba85fcba5.tar.gz
dynld-279eeb199a20812068d4091be0652c8ba85fcba5.zip
04: dynld, map initial SO region with MAP_NONE
Diffstat (limited to '04_dynld_nostd/dynld.c')
-rw-r--r--04_dynld_nostd/dynld.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/04_dynld_nostd/dynld.c b/04_dynld_nostd/dynld.c
index 5193761..4de9ed5 100644
--- a/04_dynld_nostd/dynld.c
+++ b/04_dynld_nostd/dynld.c
@@ -324,7 +324,7 @@ static Dso map_dependency(const char* dependency) {
addr_end = (addr_end + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1);
// Reserve region big enough to map all `PT_LOAD` sections of `dependency`.
- uint8_t* map = mmap(0 /* addr */, addr_end - addr_start /* len */, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS,
+ uint8_t* map = mmap(0 /* addr */, addr_end - addr_start /* len */, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS,
-1 /* fd */, 0 /* file offset */);
ERROR_ON(map == MAP_FAILED, "Failed to mmap address space for dependency '%s'\n", dependency);