[RFC][PATCH 1/2] pipe: header file and removal of dupfd()'s static
[RFC][PATCH 1/2] pipe: header file and removal of dupfd()'s static Defines data structures in order to use checkpointing a pipe. Also, dupfd() in fcntl.c is called in restoring pipe so as to install struct file pointer to the specified file descriptor. Masahiko. --- /dev/null 2006-05-22 07:25:23.000000000 -0700 +++ linux-2.6.19.2/include/linux/cr.h 2007-01-22 15:19:28.000000000 -0800 @@ -0,0 +1,27 @@ +#ifndef _LINUX_CR_H +#define _LINUX_CR_H + +/* + * include/linux/cr.h + * + * checkpoint and restart + */ + +struct cr_pipe_buffer_info { + unsigned int offset, len, flags; +}; + +struct cr_pipe_buffer { + char buf[PAGE_SIZE]; + struct cr_pipe_buffer_info info; +}; + +struct cr_pipe { + int nrbufs; + // waiter, fasync ... + struct cr_pipe_buffer bufs[PIPE_BUFFERS]; +}; + +extern int dupfd(struct file *file, unsigned int start); + +#endif --- linux-2.6.19.2/fs/fcntl.c.original 2007-01-10 11:10:37.000000000 -0800 +++ linux-2.6.19.2/fs/fcntl.c 2007-01-15 16:36:56.000000000 -0800 @@ -111,7 +111,7 @@ out: return error; } -static int dupfd(struct file *file, unsigned int start) +int dupfd(struct file *file, unsigned int start) { struct files_struct * files = current->files; struct fdtable *fdt; _______________________________________________ Containers mailing list Containers@lists.osdl.org https://lists.osdl.org/mailman/listinfo/containers