HCoop / hcoop / debian / openafs.git / blame
| Commit | Line | Data |
|---|---|---|
| 805e021f CE |
1 | AC_DEFUN([OPENAFS_LINUX_KERNEL_SYSCALL_PROBE_SETUP],[ |
| 2 | dnl If we are guaranteed that keyrings will work - that is | |
| 3 | dnl a) The kernel has keyrings enabled | |
| 4 | dnl b) The code is new enough to give us a key_type_keyring | |
| 5 | dnl then we just disable syscall probing unless we've been | |
| 6 | dnl told otherwise | |
| 7 | ||
| 8 | AS_IF([test "$enable_linux_syscall_probing" = "maybe"], | |
| 9 | [AS_IF([test "$ac_cv_linux_keyring_support" = "yes" -a "$ac_cv_linux_exports_key_type_keyring" = "yes"], | |
| 10 | [enable_linux_syscall_probing="no"], | |
| 11 | [enable_linux_syscall_probing="yes"]) | |
| 12 | ]) | |
| 13 | ||
| 14 | dnl Syscall probing needs a few tests of its own, and just | |
| 15 | dnl won't work if the kernel doesn't export init_mm | |
| 16 | AS_IF([test "$enable_linux_syscall_probing" = "yes"], [ | |
| 17 | LINUX_EXPORTS_INIT_MM | |
| 18 | AS_IF([test "$ac_cv_linux_exports_init_mm" = "no"], [ | |
| 19 | AC_MSG_ERROR( | |
| 20 | [Can't do syscall probing without exported init_mm]) | |
| 21 | ]) | |
| 22 | LINUX_EXPORTS_SYS_CHDIR | |
| 23 | LINUX_EXPORTS_SYS_OPEN | |
| 24 | AC_DEFINE(ENABLE_LINUX_SYSCALL_PROBING, 1, | |
| 25 | [define to enable syscall table probes]) | |
| 26 | ]) | |
| 27 | ]) | |
| 28 | ||
| 29 | AC_DEFUN([OPENAFS_LINUX_KERNEL_SYSCALL_PROBE_CHECKS],[ | |
| 30 | dnl Syscall probing | |
| 31 | if test "x$ac_cv_linux_config_modversions" = "xno" -o $AFS_SYSKVERS -ge 26; then | |
| 32 | AS_IF([test "$enable_linux_syscall_probing" = "yes"], [ | |
| 33 | AC_MSG_WARN([Cannot determine sys_call_table status. assuming it isn't exported]) | |
| 34 | ]) | |
| 35 | ac_cv_linux_exports_sys_call_table=no | |
| 36 | if test -f "$LINUX_KERNEL_PATH/include/asm/ia32_unistd.h"; then | |
| 37 | ac_cv_linux_exports_ia32_sys_call_table=yes | |
| 38 | fi | |
| 39 | else | |
| 40 | LINUX_EXPORTS_KALLSYMS_ADDRESS | |
| 41 | LINUX_EXPORTS_KALLSYMS_SYMBOL | |
| 42 | LINUX_EXPORTS_SYS_CALL_TABLE | |
| 43 | LINUX_EXPORTS_IA32_SYS_CALL_TABLE | |
| 44 | if test "x$ac_cv_linux_exports_sys_call_table" = "xno"; then | |
| 45 | linux_syscall_method=none | |
| 46 | if test "x$ac_cv_linux_exports_init_mm" = "xyes"; then | |
| 47 | linux_syscall_method=scan | |
| 48 | if test "x$ac_cv_linux_exports_kallsyms_address" = "xyes"; then | |
| 49 | linux_syscall_method=scan_with_kallsyms_address | |
| 50 | fi | |
| 51 | fi | |
| 52 | if test "x$ac_cv_linux_exports_kallsyms_symbol" = "xyes"; then | |
| 53 | linux_syscall_method=kallsyms_symbol | |
| 54 | fi | |
| 55 | if test "x$linux_syscall_method" = "xnone"; then | |
| 56 | AC_MSG_WARN([no available sys_call_table access method -- guessing scan]) | |
| 57 | linux_syscall_method=scan | |
| 58 | fi | |
| 59 | fi | |
| 60 | fi | |
| 61 | ]) |