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| author | Chris Kennelly <ckennelly@google.com> | 2024-01-29 23:13:24 -0800 |
|---|---|---|
| committer | Copybara-Service <copybara-worker@google.com> | 2024-01-29 23:13:59 -0800 |
| commit | 0e98cceb32df218d718cc88d099eaf380857788d (patch) | |
| tree | a6b061ee0d5895b2587b90f4818b36fea7788ce2 | |
| parent | f2840b37a328c67c839f218326f41fc7867aed59 (diff) | |
| download | sandboxed-api-0e98cceb32df218d718cc88d099eaf380857788d.tar.gz | |
Permit TCMalloc to use MAP_FIXED_NOREPLACE.
PiperOrigin-RevId: 602616926
Change-Id: I6337f740baebea6f8c63622a502a200c6f7bdb47
| -rw-r--r-- | sandboxed_api/sandbox2/policybuilder.cc | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sandboxed_api/sandbox2/policybuilder.cc b/sandboxed_api/sandbox2/policybuilder.cc index af9ec09..ce9567c 100644 --- a/sandboxed_api/sandbox2/policybuilder.cc +++ b/sandboxed_api/sandbox2/policybuilder.cc @@ -70,6 +70,9 @@ #include <asm/termbits.h> // On PPC, TCGETS macro needs termios #endif +#ifndef MAP_FIXED_NOREPLACE +#define MAP_FIXED_NOREPLACE 0x100000 +#endif #ifndef PR_SET_VMA #define PR_SET_VMA 0x53564d41 #endif @@ -285,6 +288,7 @@ PolicyBuilder& PolicyBuilder::AllowTcMalloc() { LABEL(&labels, prot_none), ARG_32(3), // flags JEQ32(MAP_ANONYMOUS | MAP_PRIVATE | MAP_NORESERVE, ALLOW), + JEQ32(MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED_NOREPLACE, ALLOW), JEQ32(MAP_ANONYMOUS | MAP_PRIVATE, ALLOW), LABEL(&labels, mmap_end), |