-/*
- * Copyright (C) 2002 Jeff Dike (jdike@addtoit.com)
+/*
+ * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL
*/
-#include <unistd.h>
#include <stdio.h>
+#include <unistd.h>
#include <errno.h>
#include <signal.h>
+#include <fcntl.h>
#include <sys/mman.h>
+#include <sys/ptrace.h>
#include <sys/wait.h>
-#include <sys/mman.h>
-#include <sys/syscall.h>
-#include "ptrace_user.h"
+#include <asm/unistd.h>
+#include "init.h"
+#include "kern_constants.h"
+#include "longjmp.h"
#include "os.h"
-#include "user.h"
#include "process.h"
-#include "irq_user.h"
-#include "kern_util.h"
-#include "longjmp.h"
#include "skas_ptrace.h"
-#include "kern_constants.h"
-#include "uml-config.h"
-#include "init.h"
+#include "user.h"
#define ARBITRARY_ADDR -1
#define FAILURE_PID -1
unsigned long os_process_pc(int pid)
{
char proc_stat[STAT_PATH_LEN], buf[256];
- unsigned long pc;
+ unsigned long pc = ARBITRARY_ADDR;
int fd, err;
sprintf(proc_stat, "/proc/%d/stat", pid);
- fd = os_open_file(proc_stat, of_read(OPENFLAGS()), 0);
- if(fd < 0){
- printk("os_process_pc - couldn't open '%s', err = %d\n",
- proc_stat, -fd);
- return ARBITRARY_ADDR;
+ fd = open(proc_stat, O_RDONLY, 0);
+ if (fd < 0) {
+ printk(UM_KERN_ERR "os_process_pc - couldn't open '%s', "
+ "errno = %d\n", proc_stat, errno);
+ goto out;
}
CATCH_EINTR(err = read(fd, buf, sizeof(buf)));
- if(err < 0){
- printk("os_process_pc - couldn't read '%s', err = %d\n",
- proc_stat, errno);
- os_close_file(fd);
- return ARBITRARY_ADDR;
+ if (err < 0) {
+ printk(UM_KERN_ERR "os_process_pc - couldn't read '%s', "
+ "err = %d\n", proc_stat, errno);
+ goto out_close;
}
os_close_file(fd);
pc = ARBITRARY_ADDR;
- if(sscanf(buf, "%*d " COMM_SCANF " %*c %*d %*d %*d %*d %*d %*d %*d "
- "%*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d "
- "%*d %*d %*d %*d %*d %lu", &pc) != 1){
- printk("os_process_pc - couldn't find pc in '%s'\n", buf);
- }
+ if (sscanf(buf, "%*d " COMM_SCANF " %*c %*d %*d %*d %*d %*d %*d %*d "
+ "%*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d "
+ "%*d %*d %*d %*d %*d %lu", &pc) != 1)
+ printk(UM_KERN_ERR "os_process_pc - couldn't find pc in '%s'\n",
+ buf);
+ out_close:
+ close(fd);
+ out:
return pc;
}
{
char stat[STAT_PATH_LEN];
char data[256];
- int parent, n, fd;
+ int parent = FAILURE_PID, n, fd;
- if(pid == -1)
- return -1;
+ if (pid == -1)
+ return parent;
snprintf(stat, sizeof(stat), "/proc/%d/stat", pid);
- fd = os_open_file(stat, of_read(OPENFLAGS()), 0);
- if(fd < 0){
- printk("Couldn't open '%s', err = %d\n", stat, -fd);
- return FAILURE_PID;
+ fd = open(stat, O_RDONLY, 0);
+ if (fd < 0) {
+ printk(UM_KERN_ERR "Couldn't open '%s', errno = %d\n", stat,
+ errno);
+ return parent;
}
CATCH_EINTR(n = read(fd, data, sizeof(data)));
- os_close_file(fd);
+ close(fd);
- if(n < 0){
- printk("Couldn't read '%s', err = %d\n", stat, errno);
- return FAILURE_PID;
+ if (n < 0) {
+ printk(UM_KERN_ERR "Couldn't read '%s', errno = %d\n", stat,
+ errno);
+ return parent;
}
parent = FAILURE_PID;
n = sscanf(data, "%*d " COMM_SCANF " %*c %d", &parent);
- if(n != 1)
- printk("Failed to scan '%s'\n", data);
+ if (n != 1)
+ printk(UM_KERN_ERR "Failed to scan '%s'\n", data);
return parent;
}
void os_kill_process(int pid, int reap_child)
{
kill(pid, SIGKILL);
- if(reap_child)
- CATCH_EINTR(waitpid(pid, NULL, 0));
-
+ if (reap_child)
+ CATCH_EINTR(waitpid(pid, NULL, __WALL));
}
/* This is here uniquely to have access to the userspace errno, i.e. the one
kill(pid, SIGKILL);
ptrace(PTRACE_KILL, pid);
ptrace(PTRACE_CONT, pid);
- if(reap_child)
- CATCH_EINTR(waitpid(pid, NULL, 0));
+ if (reap_child)
+ CATCH_EINTR(waitpid(pid, NULL, __WALL));
}
/* Don't use the glibc version, which caches the result in TLS. It misses some
void *loc;
int prot;
- prot = (r ? PROT_READ : 0) | (w ? PROT_WRITE : 0) |
+ prot = (r ? PROT_READ : 0) | (w ? PROT_WRITE : 0) |
(x ? PROT_EXEC : 0);
loc = mmap64((void *) virt, len, prot, MAP_SHARED | MAP_FIXED,
fd, off);
- if(loc == MAP_FAILED)
+ if (loc == MAP_FAILED)
return -errno;
return 0;
}
int os_protect_memory(void *addr, unsigned long len, int r, int w, int x)
{
- int prot = ((r ? PROT_READ : 0) | (w ? PROT_WRITE : 0) |
+ int prot = ((r ? PROT_READ : 0) | (w ? PROT_WRITE : 0) |
(x ? PROT_EXEC : 0));
- if(mprotect(addr, len, prot) < 0)
+ if (mprotect(addr, len, prot) < 0)
return -errno;
- return 0;
+
+ return 0;
}
int os_unmap_memory(void *addr, int len)
{
- int err;
+ int err;
- err = munmap(addr, len);
- if(err < 0)
+ err = munmap(addr, len);
+ if (err < 0)
return -errno;
- return 0;
+ return 0;
}
#ifndef MADV_REMOVE
int err;
err = madvise(addr, length, MADV_REMOVE);
- if(err < 0)
+ if (err < 0)
err = -errno;
return err;
}
void *addr;
int fd, ok = 0;
- printk("Checking host MADV_REMOVE support...");
+ printk(UM_KERN_INFO "Checking host MADV_REMOVE support...");
fd = create_mem_file(UM_KERN_PAGE_SIZE);
- if(fd < 0){
- printk("Creating test memory file failed, err = %d\n", -fd);
+ if (fd < 0) {
+ printk(UM_KERN_ERR "Creating test memory file failed, "
+ "err = %d\n", -fd);
goto out;
}
addr = mmap64(NULL, UM_KERN_PAGE_SIZE, PROT_READ | PROT_WRITE,
MAP_SHARED, fd, 0);
- if(addr == MAP_FAILED){
- printk("Mapping test memory file failed, err = %d\n", -errno);
+ if (addr == MAP_FAILED) {
+ printk(UM_KERN_ERR "Mapping test memory file failed, "
+ "err = %d\n", -errno);
goto out_close;
}
- if(madvise(addr, UM_KERN_PAGE_SIZE, MADV_REMOVE) != 0){
- printk("MADV_REMOVE failed, err = %d\n", -errno);
+ if (madvise(addr, UM_KERN_PAGE_SIZE, MADV_REMOVE) != 0) {
+ printk(UM_KERN_ERR "MADV_REMOVE failed, err = %d\n", -errno);
goto out_unmap;
}
- printk("OK\n");
+ printk(UM_KERN_CONT "OK\n");
ok = 1;
out_unmap:
void init_new_thread_signals(void)
{
set_handler(SIGSEGV, (__sighandler_t) sig_handler, SA_ONSTACK,
- SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1);
+ SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1);
set_handler(SIGTRAP, (__sighandler_t) sig_handler, SA_ONSTACK,
- SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1);
+ SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1);
set_handler(SIGFPE, (__sighandler_t) sig_handler, SA_ONSTACK,
- SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1);
+ SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1);
set_handler(SIGILL, (__sighandler_t) sig_handler, SA_ONSTACK,
- SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1);
+ SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1);
set_handler(SIGBUS, (__sighandler_t) sig_handler, SA_ONSTACK,
- SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1);
+ SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1);
signal(SIGHUP, SIG_IGN);
- init_irq_signals(1);
+ set_handler(SIGIO, (__sighandler_t) sig_handler,
+ SA_ONSTACK | SA_RESTART, SIGUSR1, SIGIO, SIGWINCH, SIGALRM,
+ SIGVTALRM, -1);
+ signal(SIGWINCH, SIG_IGN);
}
-int run_kernel_thread(int (*fn)(void *), void *arg, void **jmp_ptr)
+int run_kernel_thread(int (*fn)(void *), void *arg, jmp_buf **jmp_ptr)
{
jmp_buf buf;
int n;
*jmp_ptr = &buf;
n = UML_SETJMP(&buf);
- if(n != 0)
+ if (n != 0)
return n;
(*fn)(arg);
return 0;
projects / linux-2.6-omap-h63xx.git / blobdiff