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-rw-r--r--arch/um/Makefile2
-rw-r--r--arch/um/drivers/mconsole_kern.c79
-rw-r--r--arch/um/drivers/ubd_kern.c36
-rw-r--r--arch/um/include/asm/asm-offsets.h1
-rw-r--r--arch/um/kernel/exitcode.c43
-rw-r--r--arch/um/kernel/irq.c4
-rw-r--r--arch/um/kernel/process.c31
-rw-r--r--arch/um/sys-i386/asm/elf.h1
-rw-r--r--arch/um/sys-ppc/asm/elf.h2
-rw-r--r--arch/um/sys-x86_64/asm/elf.h1
10 files changed, 99 insertions, 101 deletions
diff --git a/arch/um/Makefile b/arch/um/Makefile
index fc633dbacf84..fab8121d2b32 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -149,6 +149,6 @@ $(SHARED_HEADERS)/user_constants.h: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s
$(SHARED_HEADERS)/kern_constants.h:
$(Q)mkdir -p $(dir $@)
- $(Q)echo '#include "../../../../include/asm/asm-offsets.h"' >$@
+ $(Q)echo '#include "../../../../include/generated/asm-offsets.h"' >$@
export SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS HEADER_ARCH DEV_NULL_PATH
diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
index e14629c87de4..3b3c36601a7b 100644
--- a/arch/um/drivers/mconsole_kern.c
+++ b/arch/um/drivers/mconsole_kern.c
@@ -6,6 +6,7 @@
#include <linux/console.h>
#include <linux/ctype.h>
+#include <linux/string.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/mm.h>
@@ -124,50 +125,36 @@ void mconsole_log(struct mc_request *req)
void mconsole_proc(struct mc_request *req)
{
struct nameidata nd;
- struct file_system_type *proc;
- struct super_block *super;
+ struct vfsmount *mnt = current->nsproxy->pid_ns->proc_mnt;
struct file *file;
int n, err;
char *ptr = req->request.data, *buf;
+ mm_segment_t old_fs = get_fs();
ptr += strlen("proc");
- while (isspace(*ptr)) ptr++;
+ ptr = skip_spaces(ptr);
- proc = get_fs_type("proc");
- if (proc == NULL) {
- mconsole_reply(req, "procfs not registered", 1, 0);
+ err = vfs_path_lookup(mnt->mnt_root, mnt, ptr, LOOKUP_FOLLOW, &nd);
+ if (err) {
+ mconsole_reply(req, "Failed to look up file", 1, 0);
goto out;
}
- super = (*proc->get_sb)(proc, 0, NULL, NULL);
- put_filesystem(proc);
- if (super == NULL) {
- mconsole_reply(req, "Failed to get procfs superblock", 1, 0);
+ err = may_open(&nd.path, MAY_READ, FMODE_READ);
+ if (result) {
+ mconsole_reply(req, "Failed to open file", 1, 0);
+ path_put(&nd.path);
goto out;
}
- up_write(&super->s_umount);
-
- nd.path.dentry = super->s_root;
- nd.path.mnt = NULL;
- nd.flags = O_RDONLY + 1;
- nd.last_type = LAST_ROOT;
-
- /* START: it was experienced that the stability problems are closed
- * if commenting out these two calls + the below read cycle. To
- * make UML crash again, it was enough to readd either one.*/
- err = link_path_walk(ptr, &nd);
- if (err) {
- mconsole_reply(req, "Failed to look up file", 1, 0);
- goto out_kill;
- }
file = dentry_open(nd.path.dentry, nd.path.mnt, O_RDONLY,
current_cred());
+ err = PTR_ERR(file);
if (IS_ERR(file)) {
mconsole_reply(req, "Failed to open file", 1, 0);
- goto out_kill;
+ path_put(&nd.path);
+ goto out;
}
- /*END*/
buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
if (buf == NULL) {
@@ -175,10 +162,13 @@ void mconsole_proc(struct mc_request *req)
goto out_fput;
}
- if ((file->f_op != NULL) && (file->f_op->read != NULL)) {
+ if (file->f_op->read) {
do {
- n = (*file->f_op->read)(file, buf, PAGE_SIZE - 1,
- &file->f_pos);
+ loff_t pos;
+ set_fs(KERNEL_DS);
+ n = vfs_read(file, buf, PAGE_SIZE - 1, &pos);
+ file_pos_write(file, pos);
+ set_fs(old_fs);
if (n >= 0) {
buf[n] = '\0';
mconsole_reply(req, buf, 0, (n > 0));
@@ -196,8 +186,6 @@ void mconsole_proc(struct mc_request *req)
kfree(buf);
out_fput:
fput(file);
- out_kill:
- deactivate_super(super);
out: ;
}
#endif
@@ -212,8 +200,7 @@ void mconsole_proc(struct mc_request *req)
char *ptr = req->request.data;
ptr += strlen("proc");
- while (isspace(*ptr))
- ptr++;
+ ptr = skip_spaces(ptr);
snprintf(path, sizeof(path), "/proc/%s", ptr);
fd = sys_open(path, 0, 0);
@@ -560,8 +547,7 @@ void mconsole_config(struct mc_request *req)
int err;
ptr += strlen("config");
- while (isspace(*ptr))
- ptr++;
+ ptr = skip_spaces(ptr);
dev = mconsole_find_dev(ptr);
if (dev == NULL) {
mconsole_reply(req, "Bad configuration option", 1, 0);
@@ -588,7 +574,7 @@ void mconsole_remove(struct mc_request *req)
int err, start, end, n;
ptr += strlen("remove");
- while (isspace(*ptr)) ptr++;
+ ptr = skip_spaces(ptr);
dev = mconsole_find_dev(ptr);
if (dev == NULL) {
mconsole_reply(req, "Bad remove option", 1, 0);
@@ -712,7 +698,7 @@ void mconsole_sysrq(struct mc_request *req)
char *ptr = req->request.data;
ptr += strlen("sysrq");
- while (isspace(*ptr)) ptr++;
+ ptr = skip_spaces(ptr);
/*
* With 'b', the system will shut down without a chance to reply,
@@ -757,8 +743,7 @@ void mconsole_stack(struct mc_request *req)
*/
ptr += strlen("stack");
- while (isspace(*ptr))
- ptr++;
+ ptr = skip_spaces(ptr);
/*
* Should really check for multiple pids or reject bad args here
@@ -833,8 +818,8 @@ static int __init mconsole_init(void)
__initcall(mconsole_init);
-static int write_proc_mconsole(struct file *file, const char __user *buffer,
- unsigned long count, void *data)
+static ssize_t mconsole_proc_write(struct file *file,
+ const char __user *buffer, size_t count, loff_t *pos)
{
char *buf;
@@ -855,6 +840,11 @@ static int write_proc_mconsole(struct file *file, const char __user *buffer,
return count;
}
+static const struct file_operations mconsole_proc_fops = {
+ .owner = THIS_MODULE,
+ .write = mconsole_proc_write,
+};
+
static int create_proc_mconsole(void)
{
struct proc_dir_entry *ent;
@@ -862,15 +852,12 @@ static int create_proc_mconsole(void)
if (notify_socket == NULL)
return 0;
- ent = create_proc_entry("mconsole", S_IFREG | 0200, NULL);
+ ent = proc_create("mconsole", 0200, NULL, &mconsole_proc_fops);
if (ent == NULL) {
printk(KERN_INFO "create_proc_mconsole : create_proc_entry "
"failed\n");
return 0;
}
-
- ent->read_proc = NULL;
- ent->write_proc = write_proc_mconsole;
return 0;
}
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 635d16d90a80..5ff554677f40 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -27,6 +27,7 @@
#include "linux/init.h"
#include "linux/cdrom.h"
#include "linux/proc_fs.h"
+#include "linux/seq_file.h"
#include "linux/ctype.h"
#include "linux/capability.h"
#include "linux/mm.h"
@@ -200,23 +201,25 @@ static void make_proc_ide(void)
proc_ide = proc_mkdir("ide0", proc_ide_root);
}
-static int proc_ide_read_media(char *page, char **start, off_t off, int count,
- int *eof, void *data)
+static int fake_ide_media_proc_show(struct seq_file *m, void *v)
{
- int len;
-
- strcpy(page, "disk\n");
- len = strlen("disk\n");
- len -= off;
- if (len < count){
- *eof = 1;
- if (len <= 0) return 0;
- }
- else len = count;
- *start = page + off;
- return len;
+ seq_puts(m, "disk\n");
+ return 0;
+}
+
+static int fake_ide_media_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, fake_ide_media_proc_show, NULL);
}
+static const struct file_operations fake_ide_media_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = fake_ide_media_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
static void make_ide_entries(const char *dev_name)
{
struct proc_dir_entry *dir, *ent;
@@ -227,11 +230,8 @@ static void make_ide_entries(const char *dev_name)
dir = proc_mkdir(dev_name, proc_ide);
if(!dir) return;
- ent = create_proc_entry("media", S_IFREG|S_IRUGO, dir);
+ ent = proc_create("media", S_IRUGO, dir, &fake_ide_media_proc_fops);
if(!ent) return;
- ent->data = NULL;
- ent->read_proc = proc_ide_read_media;
- ent->write_proc = NULL;
snprintf(name, sizeof(name), "ide0/%s", dev_name);
proc_symlink(dev_name, proc_ide_root, name);
}
diff --git a/arch/um/include/asm/asm-offsets.h b/arch/um/include/asm/asm-offsets.h
new file mode 100644
index 000000000000..d370ee36a182
--- /dev/null
+++ b/arch/um/include/asm/asm-offsets.h
@@ -0,0 +1 @@
+#include <generated/asm-offsets.h>
diff --git a/arch/um/kernel/exitcode.c b/arch/um/kernel/exitcode.c
index 6540d2c9fbb7..829df49dee99 100644
--- a/arch/um/kernel/exitcode.c
+++ b/arch/um/kernel/exitcode.c
@@ -6,7 +6,9 @@
#include <linux/ctype.h>
#include <linux/init.h>
#include <linux/kernel.h>
+#include <linux/module.h>
#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
#include <linux/types.h>
#include <asm/uaccess.h>
@@ -16,30 +18,26 @@
*/
int uml_exitcode = 0;
-static int read_proc_exitcode(char *page, char **start, off_t off,
- int count, int *eof, void *data)
+static int exitcode_proc_show(struct seq_file *m, void *v)
{
- int len, val;
+ int val;
/*
* Save uml_exitcode in a local so that we don't need to guarantee
* that sprintf accesses it atomically.
*/
val = uml_exitcode;
- len = sprintf(page, "%d\n", val);
- len -= off;
- if (len <= off+count)
- *eof = 1;
- *start = page + off;
- if (len > count)
- len = count;
- if (len < 0)
- len = 0;
- return len;
+ seq_printf(m, "%d\n", val);
+ return 0;
+}
+
+static int exitcode_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, exitcode_proc_show, NULL);
}
-static int write_proc_exitcode(struct file *file, const char __user *buffer,
- unsigned long count, void *data)
+static ssize_t exitcode_proc_write(struct file *file,
+ const char __user *buffer, size_t count, loff_t *pos)
{
char *end, buf[sizeof("nnnnn\0")];
int tmp;
@@ -55,20 +53,25 @@ static int write_proc_exitcode(struct file *file, const char __user *buffer,
return count;
}
+static const struct file_operations exitcode_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = exitcode_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .write = exitcode_proc_write,
+};
+
static int make_proc_exitcode(void)
{
struct proc_dir_entry *ent;
- ent = create_proc_entry("exitcode", 0600, NULL);
+ ent = proc_create("exitcode", 0600, NULL, &exitcode_proc_fops);
if (ent == NULL) {
printk(KERN_WARNING "make_proc_exitcode : Failed to register "
"/proc/exitcode\n");
return 0;
}
-
- ent->read_proc = read_proc_exitcode;
- ent->write_proc = write_proc_exitcode;
-
return 0;
}
diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index 039270b9b73b..89474ba0741e 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -34,7 +34,7 @@ int show_interrupts(struct seq_file *p, void *v)
}
if (i < NR_IRQS) {
- spin_lock_irqsave(&irq_desc[i].lock, flags);
+ raw_spin_lock_irqsave(&irq_desc[i].lock, flags);
action = irq_desc[i].action;
if (!action)
goto skip;
@@ -53,7 +53,7 @@ int show_interrupts(struct seq_file *p, void *v)
seq_putc(p, '\n');
skip:
- spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+ raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags);
} else if (i == NR_IRQS)
seq_putc(p, '\n');
diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index 4a28a1568d85..2f910a1b7454 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -9,11 +9,13 @@
#include <linux/hardirq.h>
#include <linux/gfp.h>
#include <linux/mm.h>
+#include <linux/module.h>
#include <linux/personality.h>
#include <linux/proc_fs.h>
#include <linux/ptrace.h>
#include <linux/random.h>
#include <linux/sched.h>
+#include <linux/seq_file.h>
#include <linux/tick.h>
#include <linux/threads.h>
#include <asm/current.h>
@@ -336,16 +338,19 @@ int get_using_sysemu(void)
return atomic_read(&using_sysemu);
}
-static int proc_read_sysemu(char *buf, char **start, off_t offset, int size,int *eof, void *data)
+static int sysemu_proc_show(struct seq_file *m, void *v)
{
- if (snprintf(buf, size, "%d\n", get_using_sysemu()) < size)
- /* No overflow */
- *eof = 1;
+ seq_printf(m, "%d\n", get_using_sysemu());
+ return 0;
+}
- return strlen(buf);
+static int sysemu_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, sysemu_proc_show, NULL);
}
-static int proc_write_sysemu(struct file *file,const char __user *buf, unsigned long count,void *data)
+static ssize_t sysemu_proc_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *pos)
{
char tmp[2];
@@ -358,13 +363,22 @@ static int proc_write_sysemu(struct file *file,const char __user *buf, unsigned
return count;
}
+static const struct file_operations sysemu_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = sysemu_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .write = sysemu_proc_write,
+};
+
int __init make_proc_sysemu(void)
{
struct proc_dir_entry *ent;
if (!sysemu_supported)
return 0;
- ent = create_proc_entry("sysemu", 0600, NULL);
+ ent = proc_create("sysemu", 0600, NULL, &sysemu_proc_fops);
if (ent == NULL)
{
@@ -372,9 +386,6 @@ int __init make_proc_sysemu(void)
return 0;
}
- ent->read_proc = proc_read_sysemu;
- ent->write_proc = proc_write_sysemu;
-
return 0;
}
diff --git a/arch/um/sys-i386/asm/elf.h b/arch/um/sys-i386/asm/elf.h
index d0da9d7c5371..770885472ed4 100644
--- a/arch/um/sys-i386/asm/elf.h
+++ b/arch/um/sys-i386/asm/elf.h
@@ -48,7 +48,6 @@ typedef struct user_i387_struct elf_fpregset_t;
PT_REGS_EAX(regs) = 0; \
} while (0)
-#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
diff --git a/arch/um/sys-ppc/asm/elf.h b/arch/um/sys-ppc/asm/elf.h
index af9463cd8ce5..8aacaf56508d 100644
--- a/arch/um/sys-ppc/asm/elf.h
+++ b/arch/um/sys-ppc/asm/elf.h
@@ -17,8 +17,6 @@ extern long elf_aux_hwcap;
#define ELF_CLASS ELFCLASS32
#endif
-#define USE_ELF_CORE_DUMP
-
#define R_386_NONE 0
#define R_386_32 1
#define R_386_PC32 2
diff --git a/arch/um/sys-x86_64/asm/elf.h b/arch/um/sys-x86_64/asm/elf.h
index 04b9e87c8dad..49655c83efd2 100644
--- a/arch/um/sys-x86_64/asm/elf.h
+++ b/arch/um/sys-x86_64/asm/elf.h
@@ -104,7 +104,6 @@ extern int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu);
clear_thread_flag(TIF_IA32);
#endif
-#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
generated by cgit v1.2.3 (git 2.39.0) at 2024-09-21 12:27:10 +0300