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Diffstat (limited to 'arch/um/os-Linux/start_up.c')
-rw-r--r--arch/um/os-Linux/start_up.c154
1 files changed, 0 insertions, 154 deletions
diff --git a/arch/um/os-Linux/start_up.c b/arch/um/os-Linux/start_up.c
index 337518c5042a..47f1ff056a54 100644
--- a/arch/um/os-Linux/start_up.c
+++ b/arch/um/os-Linux/start_up.c
@@ -24,7 +24,6 @@
#include <ptrace_user.h>
#include <registers.h>
#include <skas.h>
-#include <skas_ptrace.h>
static void ptrace_child(void)
{
@@ -143,44 +142,6 @@ static int stop_ptraced_child(int pid, int exitcode, int mustexit)
}
/* Changed only during early boot */
-int ptrace_faultinfo;
-static int disable_ptrace_faultinfo;
-
-int ptrace_ldt;
-static int disable_ptrace_ldt;
-
-int proc_mm;
-static int disable_proc_mm;
-
-int have_switch_mm;
-static int disable_switch_mm;
-
-int skas_needs_stub;
-
-static int __init skas0_cmd_param(char *str, int* add)
-{
- disable_ptrace_faultinfo = 1;
- disable_ptrace_ldt = 1;
- disable_proc_mm = 1;
- disable_switch_mm = 1;
-
- return 0;
-}
-
-/* The two __uml_setup would conflict, without this stupid alias. */
-
-static int __init mode_skas0_cmd_param(char *str, int* add)
- __attribute__((alias("skas0_cmd_param")));
-
-__uml_setup("skas0", skas0_cmd_param,
-"skas0\n"
-" Disables SKAS3 and SKAS4 usage, so that SKAS0 is used\n\n");
-
-__uml_setup("mode=skas0", mode_skas0_cmd_param,
-"mode=skas0\n"
-" Disables SKAS3 and SKAS4 usage, so that SKAS0 is used.\n\n");
-
-/* Changed only during early boot */
static int force_sysemu_disabled = 0;
static int __init nosysemu_cmd_param(char *str, int* add)
@@ -376,121 +337,6 @@ void __init os_early_checks(void)
stop_ptraced_child(pid, 1, 1);
}
-static int __init noprocmm_cmd_param(char *str, int* add)
-{
- disable_proc_mm = 1;
- return 0;
-}
-
-__uml_setup("noprocmm", noprocmm_cmd_param,
-"noprocmm\n"
-" Turns off usage of /proc/mm, even if host supports it.\n"
-" To support /proc/mm, the host needs to be patched using\n"
-" the current skas3 patch.\n\n");
-
-static int __init noptracefaultinfo_cmd_param(char *str, int* add)
-{
- disable_ptrace_faultinfo = 1;
- return 0;
-}
-
-__uml_setup("noptracefaultinfo", noptracefaultinfo_cmd_param,
-"noptracefaultinfo\n"
-" Turns off usage of PTRACE_FAULTINFO, even if host supports\n"
-" it. To support PTRACE_FAULTINFO, the host needs to be patched\n"
-" using the current skas3 patch.\n\n");
-
-static int __init noptraceldt_cmd_param(char *str, int* add)
-{
- disable_ptrace_ldt = 1;
- return 0;
-}
-
-__uml_setup("noptraceldt", noptraceldt_cmd_param,
-"noptraceldt\n"
-" Turns off usage of PTRACE_LDT, even if host supports it.\n"
-" To support PTRACE_LDT, the host needs to be patched using\n"
-" the current skas3 patch.\n\n");
-
-static inline void check_skas3_ptrace_faultinfo(void)
-{
- struct ptrace_faultinfo fi;
- int pid, n;
-
- non_fatal(" - PTRACE_FAULTINFO...");
- pid = start_ptraced_child();
-
- n = ptrace(PTRACE_FAULTINFO, pid, 0, &fi);
- if (n < 0) {
- if (errno == EIO)
- non_fatal("not found\n");
- else
- perror("not found");
- } else if (disable_ptrace_faultinfo)
- non_fatal("found but disabled on command line\n");
- else {
- ptrace_faultinfo = 1;
- non_fatal("found\n");
- }
-
- stop_ptraced_child(pid, 1, 1);
-}
-
-static inline void check_skas3_ptrace_ldt(void)
-{
-#ifdef PTRACE_LDT
- int pid, n;
- unsigned char ldtbuf[40];
- struct ptrace_ldt ldt_op = (struct ptrace_ldt) {
- .func = 2, /* read default ldt */
- .ptr = ldtbuf,
- .bytecount = sizeof(ldtbuf)};
-
- non_fatal(" - PTRACE_LDT...");
- pid = start_ptraced_child();
-
- n = ptrace(PTRACE_LDT, pid, 0, (unsigned long) &ldt_op);
- if (n < 0) {
- if (errno == EIO)
- non_fatal("not found\n");
- else
- perror("not found");
- } else if (disable_ptrace_ldt)
- non_fatal("found, but use is disabled\n");
- else {
- ptrace_ldt = 1;
- non_fatal("found\n");
- }
-
- stop_ptraced_child(pid, 1, 1);
-#endif
-}
-
-static inline void check_skas3_proc_mm(void)
-{
- non_fatal(" - /proc/mm...");
- if (access("/proc/mm", W_OK) < 0)
- perror("not found");
- else if (disable_proc_mm)
- non_fatal("found but disabled on command line\n");
- else {
- proc_mm = 1;
- non_fatal("found\n");
- }
-}
-
-void can_do_skas(void)
-{
- non_fatal("Checking for the skas3 patch in the host:\n");
-
- check_skas3_proc_mm();
- check_skas3_ptrace_faultinfo();
- check_skas3_ptrace_ldt();
-
- if (!proc_mm || !ptrace_faultinfo || !ptrace_ldt)
- skas_needs_stub = 1;
-}
-
int __init parse_iomem(char *str, int *add)
{
struct iomem_region *new;