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mcexec: drop READ_IMPLIES_EXEC from personality to avoid device file mapping failure

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Balazs Gerofi
2018-04-02 20:12:54 +09:00
parent d5190990f5
commit 12e44050c9
1 changed files with 7 additions and 1 deletions
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8
executer/user/mcexec.c
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@@ -1856,8 +1856,14 @@ int main(int argc, char **argv)
altroot = "/usr/linux-k1om-4.7/linux-k1om"; altroot = "/usr/linux-k1om-4.7/linux-k1om";
} }
/* Disable address space layout randomization */ /* Disable READ_IMPLIES_EXEC */
persona = personality(0xffffffff); persona = personality(0xffffffff);
if (persona & READ_IMPLIES_EXEC) {
persona &= ~READ_IMPLIES_EXEC;
persona = personality(persona);
}
/* Disable address space layout randomization */
__dprintf("persona=%08x\n", persona); __dprintf("persona=%08x\n", persona);
if ((persona & (PER_LINUX | ADDR_NO_RANDOMIZE)) == 0) { if ((persona & (PER_LINUX | ADDR_NO_RANDOMIZE)) == 0) {
CHKANDJUMP(getenv("MCEXEC_ADDR_NO_RANDOMIZE"), 1, "personality() and then execv() failed\n"); CHKANDJUMP(getenv("MCEXEC_ADDR_NO_RANDOMIZE"), 1, "personality() and then execv() failed\n");