#include <errno.h> #include <unistd.h> #include <sys/ptrace.h> #include <sys/syscall.h> #include <asm/ldt.h> #include "sysdep/tls.h" #include "uml-config.h" /* TLS support - we basically rely on the host's one.*/ /* In TT mode, this should be called only by the tracing thread, and makes sense * only for PTRACE_SET_THREAD_AREA. In SKAS mode, it's used normally. * */ #ifndef PTRACE_GET_THREAD_AREA #define PTRACE_GET_THREAD_AREA 25 #endif #ifndef PTRACE_SET_THREAD_AREA #define PTRACE_SET_THREAD_AREA 26 #endif int os_set_thread_area(user_desc_t *info, int pid) { int ret; ret = ptrace(PTRACE_SET_THREAD_AREA, pid, info->entry_number, (unsigned long) info); if (ret < 0) ret = -errno; return ret; } #ifdef UML_CONFIG_MODE_SKAS int os_get_thread_area(user_desc_t *info, int pid) { int ret; ret = ptrace(PTRACE_GET_THREAD_AREA, pid, info->entry_number, (unsigned long) info); if (ret < 0) ret = -errno; return ret; } #endif #ifdef UML_CONFIG_MODE_TT #include "linux/unistd.h" int do_set_thread_area_tt(user_desc_t *info) { int ret; ret = syscall(__NR_set_thread_area,info); if (ret < 0) { ret = -errno; } return ret; } int do_get_thread_area_tt(user_desc_t *info) { int ret; ret = syscall(__NR_get_thread_area,info); if (ret < 0) { ret = -errno; } return ret; } #endif /* UML_CONFIG_MODE_TT */