#include "os.h"
#include "user.h"
#include "kern_util.h"
-#include "user_util.h"
static void copy_stat(struct uml_stat *dst, struct stat64 *src)
{
return 0;
}
-void os_print_error(int error, const char* str)
-{
- errno = error < 0 ? -error : error;
-
- perror(str);
-}
-
/* FIXME? required only by hostaudio (because it passes ioctls verbatim) */
int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg)
{
return err;
}
-int os_window_size(int fd, int *rows, int *cols)
-{
- struct winsize size;
-
- if(ioctl(fd, TIOCGWINSZ, &size) < 0)
- return -errno;
-
- *rows = size.ws_row;
- *cols = size.ws_col;
-
- return 0;
-}
-
-int os_new_tty_pgrp(int fd, int pid)
-{
- if(ioctl(fd, TIOCSCTTY, 0) < 0)
- return -errno;
-
- if(tcsetpgrp(fd, pid) < 0)
- return -errno;
-
- return 0;
-}
-
/* FIXME: ensure namebuf in os_get_if_name is big enough */
int os_get_ifname(int fd, char* namebuf)
{
*mode_out = OPENFLAGS();
- err = os_access(file, OS_ACC_W_OK);
- if((err < 0) && (err != -EACCES))
- return(err);
-
- *mode_out = of_write(*mode_out);
-
- err = os_access(file, OS_ACC_R_OK);
- if((err < 0) && (err != -EACCES))
- return(err);
+ err = access(file, W_OK);
+ if(err && (errno != EACCES))
+ return -errno;
+ else if(!err)
+ *mode_out = of_write(*mode_out);
- *mode_out = of_read(*mode_out);
+ err = access(file, R_OK);
+ if(err && (errno != EACCES))
+ return -errno;
+ else if(!err)
+ *mode_out = of_read(*mode_out);
- return(0);
+ return err;
}
int os_open_file(char *file, struct openflags flags, int mode)
fd = open64(file, f, mode);
if(fd < 0)
- return(-errno);
+ return -errno;
if(flags.cl && fcntl(fd, F_SETFD, 1)){
err = -errno;
- os_close_file(fd);
+ close(fd);
return err;
}
- return(fd);
+ return fd;
}
int os_connect_socket(char *name)
close(fd);
}
-int os_seek_file(int fd, __u64 offset)
+int os_seek_file(int fd, unsigned long long offset)
{
- __u64 actual;
+ unsigned long long actual;
actual = lseek64(fd, offset, SEEK_SET);
if(actual != offset)
return 0;
}
-static int fault_buffer(void *start, int len,
- int (*copy_proc)(void *addr, void *buf, int len))
-{
- int page = getpagesize(), i;
- char c;
-
- for(i = 0; i < len; i += page){
- if((*copy_proc)(start + i, &c, sizeof(c)))
- return -EFAULT;
- }
- if((len % page) != 0){
- if((*copy_proc)(start + len - 1, &c, sizeof(c)))
- return -EFAULT;
- }
- return 0;
-}
-
-static int file_io(int fd, void *buf, int len,
- int (*io_proc)(int fd, void *buf, int len),
- int (*copy_user_proc)(void *addr, void *buf, int len))
+int os_read_file(int fd, void *buf, int len)
{
- int n, err;
-
- do {
- n = (*io_proc)(fd, buf, len);
- if((n < 0) && (errno == EFAULT)){
- err = fault_buffer(buf, len, copy_user_proc);
- if(err)
- return err;
- n = (*io_proc)(fd, buf, len);
- }
- } while((n < 0) && (errno == EINTR));
+ int n = read(fd, buf, len);
if(n < 0)
return -errno;
return n;
}
-int os_read_file(int fd, void *buf, int len)
-{
- return file_io(fd, buf, len, (int (*)(int, void *, int)) read,
- copy_from_user_proc);
-}
-
int os_write_file(int fd, const void *buf, int len)
{
- return file_io(fd, (void *) buf, len,
- (int (*)(int, void *, int)) write, copy_to_user_proc);
+ int n = write(fd, (void *) buf, len);
+
+ if(n < 0)
+ return -errno;
+ return n;
}
int os_file_size(char *file, unsigned long long *size_out)
err = os_stat_file(file, &buf);
if(err < 0){
printk("Couldn't stat \"%s\" : err = %d\n", file, -err);
- return(err);
+ return err;
}
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){
- printk("Couldn't open \"%s\", errno = %d\n", file, -fd);
- return(fd);
+ fd = open(file, O_RDONLY, 0);
+ if(fd < 0) {
+ err = -errno;
+ printk("Couldn't open \"%s\", errno = %d\n", file,
+ errno);
+ return err;
}
if(ioctl(fd, BLKGETSIZE, &blocks) < 0){
err = -errno;
printk("Couldn't get the block size of \"%s\", "
"errno = %d\n", file, errno);
- os_close_file(fd);
- return(err);
+ close(fd);
+ return err;
}
*size_out = ((long long) blocks) * 512;
- os_close_file(fd);
- return(0);
+ close(fd);
}
- *size_out = buf.ust_size;
- return(0);
+ else *size_out = buf.ust_size;
+
+ return 0;
}
int os_file_modtime(char *file, unsigned long *modtime)
return 0;
}
-int os_get_exec_close(int fd, int* close_on_exec)
+int os_get_exec_close(int fd, int *close_on_exec)
{
int ret;
- do {
- ret = fcntl(fd, F_GETFD);
- } while((ret < 0) && (errno == EINTR)) ;
+ CATCH_EINTR(ret = fcntl(fd, F_GETFD));
if(ret < 0)
- return(-errno);
+ return -errno;
- *close_on_exec = (ret&FD_CLOEXEC) ? 1 : 0;
- return(ret);
+ *close_on_exec = (ret & FD_CLOEXEC) ? 1 : 0;
+ return ret;
}
-int os_set_exec_close(int fd, int close_on_exec)
+int os_set_exec_close(int fd)
{
- int flag, err;
+ int err;
- if(close_on_exec) flag = FD_CLOEXEC;
- else flag = 0;
-
- do {
- err = fcntl(fd, F_SETFD, flag);
- } while((err < 0) && (errno == EINTR)) ;
+ CATCH_EINTR(err = fcntl(fd, F_SETFD, FD_CLOEXEC));
if(err < 0)
- return(-errno);
- return(err);
+ return -errno;
+ return err;
}
int os_pipe(int *fds, int stream, int close_on_exec)
err = socketpair(AF_UNIX, type, 0, fds);
if(err < 0)
- return(-errno);
+ return -errno;
if(!close_on_exec)
- return(0);
+ return 0;
- err = os_set_exec_close(fds[0], 1);
+ err = os_set_exec_close(fds[0]);
if(err < 0)
goto error;
- err = os_set_exec_close(fds[1], 1);
+ err = os_set_exec_close(fds[1]);
if(err < 0)
goto error;
error:
printk("os_pipe : Setting FD_CLOEXEC failed, err = %d\n", -err);
- os_close_file(fds[1]);
- os_close_file(fds[0]);
- return(err);
+ close(fds[1]);
+ close(fds[0]);
+ return err;
}
int os_set_fd_async(int fd, int owner)
n = recvmsg(fd, &msg, 0);
if(n < 0)
return -errno;
-
- else if(n != sizeof(iov.iov_len))
+ else if(n != iov.iov_len)
*helper_pid_out = -1;
cmsg = CMSG_FIRSTHDR(&msg);
return -errno;
if(close_on_exec) {
- err = os_set_exec_close(sock, 1);
+ err = os_set_exec_close(sock);
if(err < 0)
printk("create_unix_socket : close_on_exec failed, "
"err = %d", -err);
git.samba.org / sfrench / cifs-2.6.git / blobdiff