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BUG: check direct syscall before multiplexed pseudo-syscall #488

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BUG: check direct syscall before multiplexed pseudo-syscall #488

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9 changes: 8 additions & 1 deletion src/syscalls.c
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Original file line number Diff line number Diff line change
Expand Up @@ -42,6 +42,13 @@
int abi_syscall_resolve_name_munge(const struct arch_def *arch,
const char *name)
{
int sys = __NR_SCMP_ERROR;

/* Check if arch implements syscall directly and return its number */
sys = arch->syscall_resolve_name_raw(name);
if (sys != __NR_SCMP_ERROR) {
return sys;
}

#define _ABI_SYSCALL_RES_NAME_CHK(NAME) \
if (!strcmp(name, #NAME)) return __PNR_##NAME;
Expand Down Expand Up @@ -79,7 +86,7 @@ int abi_syscall_resolve_name_munge(const struct arch_def *arch,
_ABI_SYSCALL_RES_NAME_CHK(shmget)
_ABI_SYSCALL_RES_NAME_CHK(shmctl)

return arch->syscall_resolve_name_raw(name);
return __NR_SCMP_ERROR;
}

/**
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