diff options
| -rw-r--r-- | fs/open.c | 2 | ||||
| -rw-r--r-- | include/linux/file.h | 1 | ||||
| -rw-r--r-- | include/linux/socket.h | 3 | ||||
| -rw-r--r-- | net/compat.c | 3 | ||||
| -rw-r--r-- | net/core/scm.c | 3 | ||||
| -rw-r--r-- | net/socket.c | 4 |
6 files changed, 10 insertions, 6 deletions
@@ -855,7 +855,7 @@ EXPORT_SYMBOL(dentry_open); /* * Find an empty file descriptor entry, and mark it busy. */ -static int get_unused_fd_flags(int flags) +int get_unused_fd_flags(int flags) { struct files_struct * files = current->files; int fd, error; diff --git a/include/linux/file.h b/include/linux/file.h index a59001e..0114fbc 100644 --- a/include/linux/file.h +++ b/include/linux/file.h @@ -73,6 +73,7 @@ extern struct file * FASTCALL(fget_light(unsigned int fd, int *fput_needed)); extern void FASTCALL(set_close_on_exec(unsigned int fd, int flag)); extern void put_filp(struct file *); extern int get_unused_fd(void); +extern int get_unused_fd_flags(int flags); extern void FASTCALL(put_unused_fd(unsigned int fd)); struct kmem_cache; diff --git a/include/linux/socket.h b/include/linux/socket.h index fe195c9..f852e1a 100644 --- a/include/linux/socket.h +++ b/include/linux/socket.h @@ -253,6 +253,9 @@ struct ucred { #define MSG_EOF MSG_FIN +#define MSG_CMSG_CLOEXEC 0x40000000 /* Set close_on_exit for file + descriptor received through + SCM_RIGHTS */ #if defined(CONFIG_COMPAT) #define MSG_CMSG_COMPAT 0x80000000 /* This message needs 32 bit fixups */ #else diff --git a/net/compat.c b/net/compat.c index 9a0f5f2..d74d821 100644 --- a/net/compat.c +++ b/net/compat.c @@ -276,7 +276,8 @@ void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm) err = security_file_receive(fp[i]); if (err) break; - err = get_unused_fd(); + err = get_unused_fd_flags(MSG_CMSG_CLOEXEC & kmsg->msg_flags + ? O_CLOEXEC : 0); if (err < 0) break; new_fd = err; diff --git a/net/core/scm.c b/net/core/scm.c index 292ad8d..44c4ec2 100644 --- a/net/core/scm.c +++ b/net/core/scm.c @@ -228,7 +228,8 @@ void scm_detach_fds(struct msghdr *msg, struct scm_cookie *scm) err = security_file_receive(fp[i]); if (err) break; - err = get_unused_fd(); + err = get_unused_fd_flags(MSG_CMSG_CLOEXEC & msg->msg_flags + ? O_CLOEXEC : 0); if (err < 0) break; new_fd = err; diff --git a/net/socket.c b/net/socket.c index f453019..b711142 100644 --- a/net/socket.c +++ b/net/socket.c @@ -1939,9 +1939,7 @@ asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, total_len = err; cmsg_ptr = (unsigned long)msg_sys.msg_control; - msg_sys.msg_flags = 0; - if (MSG_CMSG_COMPAT & flags) - msg_sys.msg_flags = MSG_CMSG_COMPAT; + msg_sys.msg_flags = flags & (MSG_CMSG_CLOEXEC|MSG_CMSG_COMPAT); if (sock->file->f_flags & O_NONBLOCK) flags |= MSG_DONTWAIT; |