summaryrefslogtreecommitdiff
path: root/arch/um/os-Linux
diff options
context:
space:
mode:
Diffstat (limited to 'arch/um/os-Linux')
-rw-r--r--arch/um/os-Linux/aio.c58
-rw-r--r--arch/um/os-Linux/drivers/ethertap_user.c6
-rw-r--r--arch/um/os-Linux/drivers/tuntap_user.c2
-rw-r--r--arch/um/os-Linux/file.c3
-rw-r--r--arch/um/os-Linux/helper.c23
-rw-r--r--arch/um/os-Linux/main.c4
-rw-r--r--arch/um/os-Linux/process.c2
-rw-r--r--arch/um/os-Linux/sigio.c23
-rw-r--r--arch/um/os-Linux/signal.c4
-rw-r--r--arch/um/os-Linux/skas/process.c2
-rw-r--r--arch/um/os-Linux/sys-x86_64/registers.c15
-rw-r--r--arch/um/os-Linux/user_syms.c5
12 files changed, 74 insertions, 73 deletions
diff --git a/arch/um/os-Linux/aio.c b/arch/um/os-Linux/aio.c
index 9bf944f6a1db..59348359f9ab 100644
--- a/arch/um/os-Linux/aio.c
+++ b/arch/um/os-Linux/aio.c
@@ -14,6 +14,7 @@
#include "init.h"
#include "user.h"
#include "mode.h"
+#include "kern_constants.h"
struct aio_thread_req {
enum aio_type type;
@@ -65,47 +66,33 @@ static long io_getevents(aio_context_t ctx_id, long min_nr, long nr,
static int do_aio(aio_context_t ctx, enum aio_type type, int fd, char *buf,
int len, unsigned long long offset, struct aio_context *aio)
{
- struct iocb iocb, *iocbp = &iocb;
+ struct iocb *iocbp = & ((struct iocb) {
+ .aio_data = (unsigned long) aio,
+ .aio_fildes = fd,
+ .aio_buf = (unsigned long) buf,
+ .aio_nbytes = len,
+ .aio_offset = offset
+ });
char c;
- int err;
- iocb = ((struct iocb) { .aio_data = (unsigned long) aio,
- .aio_reqprio = 0,
- .aio_fildes = fd,
- .aio_buf = (unsigned long) buf,
- .aio_nbytes = len,
- .aio_offset = offset,
- .aio_reserved1 = 0,
- .aio_reserved2 = 0,
- .aio_reserved3 = 0 });
-
- switch(type){
+ switch (type) {
case AIO_READ:
- iocb.aio_lio_opcode = IOCB_CMD_PREAD;
- err = io_submit(ctx, 1, &iocbp);
+ iocbp->aio_lio_opcode = IOCB_CMD_PREAD;
break;
case AIO_WRITE:
- iocb.aio_lio_opcode = IOCB_CMD_PWRITE;
- err = io_submit(ctx, 1, &iocbp);
+ iocbp->aio_lio_opcode = IOCB_CMD_PWRITE;
break;
case AIO_MMAP:
- iocb.aio_lio_opcode = IOCB_CMD_PREAD;
- iocb.aio_buf = (unsigned long) &c;
- iocb.aio_nbytes = sizeof(c);
- err = io_submit(ctx, 1, &iocbp);
+ iocbp->aio_lio_opcode = IOCB_CMD_PREAD;
+ iocbp->aio_buf = (unsigned long) &c;
+ iocbp->aio_nbytes = sizeof(c);
break;
default:
- printk("Bogus op in do_aio - %d\n", type);
- err = -EINVAL;
- break;
+ printk(UM_KERN_ERR "Bogus op in do_aio - %d\n", type);
+ return -EINVAL;
}
- if(err > 0)
- err = 0;
- else
- err = -errno;
-
- return err;
+ return (io_submit(ctx, 1, &iocbp) > 0) ? 0 : -errno;
}
/* Initialized in an initcall and unchanged thereafter */
@@ -177,6 +164,7 @@ static int do_not_aio(struct aio_thread_req *req)
static int aio_req_fd_r = -1;
static int aio_req_fd_w = -1;
static int aio_pid = -1;
+static unsigned long aio_stack;
static int not_aio_thread(void *arg)
{
@@ -212,7 +200,6 @@ static int not_aio_thread(void *arg)
static int init_aio_24(void)
{
- unsigned long stack;
int fds[2], err;
err = os_pipe(fds, 1, 1);
@@ -227,7 +214,7 @@ static int init_aio_24(void)
goto out_close_pipe;
err = run_helper_thread(not_aio_thread, NULL,
- CLONE_FILES | CLONE_VM | SIGCHLD, &stack, 0);
+ CLONE_FILES | CLONE_VM | SIGCHLD, &aio_stack);
if(err < 0)
goto out_close_pipe;
@@ -252,7 +239,6 @@ out:
#define DEFAULT_24_AIO 0
static int init_aio_26(void)
{
- unsigned long stack;
int err;
if(io_setup(256, &ctx)){
@@ -263,7 +249,7 @@ static int init_aio_26(void)
}
err = run_helper_thread(aio_thread, NULL,
- CLONE_FILES | CLONE_VM | SIGCHLD, &stack, 0);
+ CLONE_FILES | CLONE_VM | SIGCHLD, &aio_stack);
if(err < 0)
return err;
@@ -365,8 +351,10 @@ __initcall(init_aio);
static void exit_aio(void)
{
- if(aio_pid != -1)
+ if (aio_pid != -1) {
os_kill_process(aio_pid, 1);
+ free_stack(aio_stack, 0);
+ }
}
__uml_exitcall(exit_aio);
diff --git a/arch/um/os-Linux/drivers/ethertap_user.c b/arch/um/os-Linux/drivers/ethertap_user.c
index acba30161287..61d3953c7ac9 100644
--- a/arch/um/os-Linux/drivers/ethertap_user.c
+++ b/arch/um/os-Linux/drivers/ethertap_user.c
@@ -54,7 +54,7 @@ static void etap_change(int op, unsigned char *addr, unsigned char *netmask,
return;
}
- output = um_kmalloc(UM_KERN_PAGE_SIZE);
+ output = kmalloc(UM_KERN_PAGE_SIZE, UM_GFP_KERNEL);
if(output == NULL)
printk("etap_change : Failed to allocate output buffer\n");
read_output(fd, output, UM_KERN_PAGE_SIZE);
@@ -117,7 +117,7 @@ static int etap_tramp(char *dev, char *gate, int control_me,
pe_data.control_remote = control_remote;
pe_data.control_me = control_me;
pe_data.data_me = data_me;
- pid = run_helper(etap_pre_exec, &pe_data, args, NULL);
+ pid = run_helper(etap_pre_exec, &pe_data, args);
if(pid < 0)
err = pid;
@@ -166,7 +166,7 @@ static int etap_open(void *data)
err = etap_tramp(pri->dev_name, pri->gate_addr, control_fds[0],
control_fds[1], data_fds[0], data_fds[1]);
output_len = UM_KERN_PAGE_SIZE;
- output = um_kmalloc(output_len);
+ output = kmalloc(output_len, UM_GFP_KERNEL);
read_output(control_fds[0], output, output_len);
if(output == NULL)
diff --git a/arch/um/os-Linux/drivers/tuntap_user.c b/arch/um/os-Linux/drivers/tuntap_user.c
index 11a9779dc9f1..f848b4ea9343 100644
--- a/arch/um/os-Linux/drivers/tuntap_user.c
+++ b/arch/um/os-Linux/drivers/tuntap_user.c
@@ -83,7 +83,7 @@ static int tuntap_open_tramp(char *gate, int *fd_out, int me, int remote,
data.stdout = remote;
data.close_me = me;
- pid = run_helper(tuntap_pre_exec, &data, argv, NULL);
+ pid = run_helper(tuntap_pre_exec, &data, argv);
if(pid < 0)
return -pid;
diff --git a/arch/um/os-Linux/file.c b/arch/um/os-Linux/file.c
index 6f92f732d253..c3ecc2a84e0c 100644
--- a/arch/um/os-Linux/file.c
+++ b/arch/um/os-Linux/file.c
@@ -320,7 +320,8 @@ int os_file_size(char *file, unsigned long long *size_out)
}
if(S_ISBLK(buf.ust_mode)){
- int fd, blocks;
+ int fd;
+ long blocks;
fd = os_open_file(file, of_read(OPENFLAGS()), 0);
if(fd < 0){
diff --git a/arch/um/os-Linux/helper.c b/arch/um/os-Linux/helper.c
index 97bed16bf4c7..d81af7b8587a 100644
--- a/arch/um/os-Linux/helper.c
+++ b/arch/um/os-Linux/helper.c
@@ -44,17 +44,13 @@ static int helper_child(void *arg)
/* Returns either the pid of the child process we run or -E* on failure.
* XXX The alloc_stack here breaks if this is called in the tracing thread, so
* we need to receive a preallocated stack (a local buffer is ok). */
-int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv,
- unsigned long *stack_out)
+int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv)
{
struct helper_data data;
unsigned long stack, sp;
int pid, fds[2], ret, n;
- if ((stack_out != NULL) && (*stack_out != 0))
- stack = *stack_out;
- else
- stack = alloc_stack(0, __cant_sleep());
+ stack = alloc_stack(0, __cant_sleep());
if (stack == 0)
return -ENOMEM;
@@ -76,8 +72,8 @@ int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv,
data.pre_data = pre_data;
data.argv = argv;
data.fd = fds[1];
- data.buf = __cant_sleep() ? um_kmalloc_atomic(PATH_MAX) :
- um_kmalloc(PATH_MAX);
+ data.buf = __cant_sleep() ? kmalloc(PATH_MAX, UM_GFP_ATOMIC) :
+ kmalloc(PATH_MAX, UM_GFP_KERNEL);
pid = clone(helper_child, (void *) sp, CLONE_VM | SIGCHLD, &data);
if (pid < 0) {
ret = -errno;
@@ -113,22 +109,21 @@ out_close:
close(fds[1]);
close(fds[0]);
out_free:
- if ((stack_out == NULL) || (*stack_out == 0))
- free_stack(stack, 0);
+ free_stack(stack, 0);
return ret;
}
int run_helper_thread(int (*proc)(void *), void *arg, unsigned int flags,
- unsigned long *stack_out, int stack_order)
+ unsigned long *stack_out)
{
unsigned long stack, sp;
int pid, status, err;
- stack = alloc_stack(stack_order, __cant_sleep());
+ stack = alloc_stack(0, __cant_sleep());
if (stack == 0)
return -ENOMEM;
- sp = stack + (UM_KERN_PAGE_SIZE << stack_order) - sizeof(void *);
+ sp = stack + UM_KERN_PAGE_SIZE - sizeof(void *);
pid = clone(proc, (void *) sp, flags | SIGCHLD, arg);
if (pid < 0) {
err = -errno;
@@ -147,7 +142,7 @@ int run_helper_thread(int (*proc)(void *), void *arg, unsigned int flags,
if (!WIFEXITED(status) || (WEXITSTATUS(status) != 0))
printk("run_helper_thread - thread returned status "
"0x%x\n", status);
- free_stack(stack, stack_order);
+ free_stack(stack, 0);
} else
*stack_out = stack;
return pid;
diff --git a/arch/um/os-Linux/main.c b/arch/um/os-Linux/main.c
index fb510d40480c..e85f4995a011 100644
--- a/arch/um/os-Linux/main.c
+++ b/arch/um/os-Linux/main.c
@@ -235,8 +235,8 @@ void *__wrap_malloc(int size)
return __real_malloc(size);
else if(size <= UM_KERN_PAGE_SIZE)
/* finding contiguous pages can be hard*/
- ret = um_kmalloc(size);
- else ret = um_vmalloc(size);
+ ret = kmalloc(size, UM_GFP_KERNEL);
+ else ret = vmalloc(size);
/* glibc people insist that if malloc fails, errno should be
* set by malloc as well. So we do.
diff --git a/arch/um/os-Linux/process.c b/arch/um/os-Linux/process.c
index 2d9d2ca39299..e9c143297512 100644
--- a/arch/um/os-Linux/process.c
+++ b/arch/um/os-Linux/process.c
@@ -194,7 +194,7 @@ int os_unmap_memory(void *addr, int len)
#define MADV_REMOVE KERNEL_MADV_REMOVE
#endif
-int __init os_drop_memory(void *addr, int length)
+int os_drop_memory(void *addr, int length)
{
int err;
diff --git a/arch/um/os-Linux/sigio.c b/arch/um/os-Linux/sigio.c
index 8d4e0c6b8c92..dc03e9cccb63 100644
--- a/arch/um/os-Linux/sigio.c
+++ b/arch/um/os-Linux/sigio.c
@@ -26,6 +26,7 @@
* exitcall.
*/
static int write_sigio_pid = -1;
+static unsigned long write_sigio_stack;
/* These arrays are initialized before the sigio thread is started, and
* the descriptors closed after it is killed. So, it can't see them change.
@@ -104,7 +105,7 @@ static int need_poll(struct pollfds *polls, int n)
if(n <= polls->size)
return 0;
- new = um_kmalloc_atomic(n * sizeof(struct pollfd));
+ new = kmalloc(n * sizeof(struct pollfd), UM_GFP_ATOMIC);
if(new == NULL){
printk("need_poll : failed to allocate new pollfds\n");
return -ENOMEM;
@@ -144,8 +145,10 @@ static void update_thread(void)
return;
fail:
/* Critical section start */
- if(write_sigio_pid != -1)
+ if (write_sigio_pid != -1) {
os_kill_process(write_sigio_pid, 1);
+ free_stack(write_sigio_stack, 0);
+ }
write_sigio_pid = -1;
close(sigio_private[0]);
close(sigio_private[1]);
@@ -230,7 +233,7 @@ static struct pollfd *setup_initial_poll(int fd)
{
struct pollfd *p;
- p = um_kmalloc(sizeof(struct pollfd));
+ p = kmalloc(sizeof(struct pollfd), UM_GFP_KERNEL);
if (p == NULL) {
printk("setup_initial_poll : failed to allocate poll\n");
return NULL;
@@ -243,7 +246,6 @@ static struct pollfd *setup_initial_poll(int fd)
static void write_sigio_workaround(void)
{
- unsigned long stack;
struct pollfd *p;
int err;
int l_write_sigio_fds[2];
@@ -293,7 +295,8 @@ static void write_sigio_workaround(void)
memcpy(sigio_private, l_sigio_private, sizeof(l_sigio_private));
write_sigio_pid = run_helper_thread(write_sigio_thread, NULL,
- CLONE_FILES | CLONE_VM, &stack, 0);
+ CLONE_FILES | CLONE_VM,
+ &write_sigio_stack);
if (write_sigio_pid < 0)
goto out_clear;
@@ -356,10 +359,12 @@ out:
static void sigio_cleanup(void)
{
- if(write_sigio_pid != -1){
- os_kill_process(write_sigio_pid, 1);
- write_sigio_pid = -1;
- }
+ if (write_sigio_pid == -1)
+ return;
+
+ os_kill_process(write_sigio_pid, 1);
+ free_stack(write_sigio_stack, 0);
+ write_sigio_pid = -1;
}
__uml_exitcall(sigio_cleanup);
diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c
index 18e5c8b67eb8..b98f7ea2d2f6 100644
--- a/arch/um/os-Linux/signal.c
+++ b/arch/um/os-Linux/signal.c
@@ -119,7 +119,7 @@ void (*handlers[_NSIG])(int sig, struct sigcontext *sc);
void handle_signal(int sig, struct sigcontext *sc)
{
- unsigned long pending = 0;
+ unsigned long pending = 1UL << sig;
do {
int nested, bail;
@@ -134,7 +134,7 @@ void handle_signal(int sig, struct sigcontext *sc)
* have to return, and the upper handler will deal
* with this interrupt.
*/
- bail = to_irq_stack(sig, &pending);
+ bail = to_irq_stack(&pending);
if(bail)
return;
diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c
index 46c00cc429bc..ba9af8d62055 100644
--- a/arch/um/os-Linux/skas/process.c
+++ b/arch/um/os-Linux/skas/process.c
@@ -41,7 +41,7 @@ int is_skas_winch(int pid, int fd, void *data)
if(pid != os_getpgrp())
return(0);
- register_winch_irq(-1, fd, -1, data);
+ register_winch_irq(-1, fd, -1, data, 0);
return(1);
}
diff --git a/arch/um/os-Linux/sys-x86_64/registers.c b/arch/um/os-Linux/sys-x86_64/registers.c
index e6fc2179d1bc..9467315b8059 100644
--- a/arch/um/os-Linux/sys-x86_64/registers.c
+++ b/arch/um/os-Linux/sys-x86_64/registers.c
@@ -4,6 +4,7 @@
*/
#include <errno.h>
+#include <sys/ptrace.h>
#include <string.h>
#include "ptrace_user.h"
#include "uml-config.h"
@@ -17,6 +18,20 @@
static unsigned long exec_regs[MAX_REG_NR];
static unsigned long exec_fp_regs[HOST_FP_SIZE];
+int save_fp_registers(int pid, unsigned long *fp_regs)
+{
+ if(ptrace(PTRACE_GETFPREGS, pid, 0, fp_regs) < 0)
+ return -errno;
+ return 0;
+}
+
+int restore_fp_registers(int pid, unsigned long *fp_regs)
+{
+ if(ptrace(PTRACE_SETFPREGS, pid, 0, fp_regs) < 0)
+ return -errno;
+ return 0;
+}
+
void init_thread_registers(union uml_pt_regs *to)
{
memcpy(to->skas.regs, exec_regs, sizeof(to->skas.regs));
diff --git a/arch/um/os-Linux/user_syms.c b/arch/um/os-Linux/user_syms.c
index 419b2d5ff6de..4c37b1b1d0b5 100644
--- a/arch/um/os-Linux/user_syms.c
+++ b/arch/um/os-Linux/user_syms.c
@@ -19,10 +19,7 @@ extern void *memmove(void *, const void *, size_t);
extern void *memset(void *, int, size_t);
extern int printf(const char *, ...);
-/* If they're not defined, the export is included in lib/string.c.*/
-#ifdef __HAVE_ARCH_STRLEN
-EXPORT_SYMBOL(strlen);
-#endif
+/* If it's not defined, the export is included in lib/string.c.*/
#ifdef __HAVE_ARCH_STRSTR
EXPORT_SYMBOL(strstr);
#endif
generated by cgit v1.2.3 (git 2.0.4) at 2024-06-16 04:37:26 +0000