HelenOS sources

SYS_PERM_REVOKE   111 kernel/generic/src/syscall/syscall.c 	[SYS_PERM_REVOKE] = (syshandler_t) sys_perm_revoke,
SYS_PERM_REVOKE    92 uspace/app/trace/syscalls.c 	[SYS_PERM_REVOKE] = { "perm_revoke", 2, V_ERRNO },
SYS_PERM_REVOKE    74 uspace/lib/c/generic/perm.c 	return (errno_t) __SYSCALL2(SYS_PERM_REVOKE, (sysarg_t) &arg, (sysarg_t) perms);
SYS_PERM_REVOKE    78 uspace/lib/c/generic/perm.c 	return (errno_t) __SYSCALL2(SYS_PERM_REVOKE, (sysarg_t) id, (sysarg_t) perms);
HelenOS homepage, sources at GitHub