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Diffstat (limited to 'arch/um/os-Linux/process.c')
-rw-r--r--arch/um/os-Linux/process.c100
1 files changed, 50 insertions, 50 deletions
diff --git a/arch/um/os-Linux/process.c b/arch/um/os-Linux/process.c
index a955e9bcd04..b2e0d8c4258 100644
--- a/arch/um/os-Linux/process.c
+++ b/arch/um/os-Linux/process.c
@@ -1,27 +1,23 @@
-/*
- * 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 <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
@@ -37,24 +33,25 @@ unsigned long os_process_pc(int pid)
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);
+ if (fd < 0) {
+ printk(UM_KERN_ERR "os_process_pc - couldn't open '%s', "
+ "err = %d\n", proc_stat, -fd);
return ARBITRARY_ADDR;
}
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);
+ if (err < 0) {
+ printk(UM_KERN_ERR "os_process_pc - couldn't read '%s', "
+ "err = %d\n", proc_stat, errno);
os_close_file(fd);
return ARBITRARY_ADDR;
}
os_close_file(fd);
pc = ARBITRARY_ADDR;
- if(sscanf(buf, "%*d " COMM_SCANF " %*c %*d %*d %*d %*d %*d %*d %*d "
+ 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);
+ "%*d %*d %*d %*d %*d %lu", &pc) != 1) {
+ printk(UM_KERN_ERR "os_process_pc - couldn't find pc in '%s'\n",
+ buf);
}
return pc;
}
@@ -65,28 +62,29 @@ int os_process_parent(int pid)
char data[256];
int parent, n, fd;
- if(pid == -1)
+ if (pid == -1)
return -1;
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);
+ if (fd < 0) {
+ printk(UM_KERN_ERR "Couldn't open '%s', err = %d\n", stat, -fd);
return FAILURE_PID;
}
CATCH_EINTR(n = read(fd, data, sizeof(data)));
os_close_file(fd);
- if(n < 0){
- printk("Couldn't read '%s', err = %d\n", stat, errno);
+ if (n < 0) {
+ printk(UM_KERN_ERR "Couldn't read '%s', err = %d\n", stat,
+ errno);
return FAILURE_PID;
}
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;
}
@@ -99,9 +97,8 @@ void os_stop_process(int pid)
void os_kill_process(int pid, int reap_child)
{
kill(pid, SIGKILL);
- if(reap_child)
+ if (reap_child)
CATCH_EINTR(waitpid(pid, NULL, 0));
-
}
/* This is here uniquely to have access to the userspace errno, i.e. the one
@@ -129,7 +126,7 @@ void os_kill_ptraced_process(int pid, int reap_child)
kill(pid, SIGKILL);
ptrace(PTRACE_KILL, pid);
ptrace(PTRACE_CONT, pid);
- if(reap_child)
+ if (reap_child)
CATCH_EINTR(waitpid(pid, NULL, 0));
}
@@ -153,34 +150,35 @@ int os_map_memory(void *virt, int fd, unsigned long long off, unsigned long len,
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
@@ -192,7 +190,7 @@ int os_drop_memory(void *addr, int length)
int err;
err = madvise(addr, length, MADV_REMOVE);
- if(err < 0)
+ if (err < 0)
err = -errno;
return err;
}
@@ -202,22 +200,24 @@ int __init can_drop_memory(void)
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;
}
@@ -256,7 +256,7 @@ int run_kernel_thread(int (*fn)(void *), void *arg, void **jmp_ptr)
*jmp_ptr = &buf;
n = UML_SETJMP(&buf);
- if(n != 0)
+ if (n != 0)
return n;
(*fn)(arg);
return 0;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-12 20:01:44 +0000