/* * Directory notifications for Linux. * * Copyright (C) 2000,2001,2002 Stephen Rothwell * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2, or (at your option) any * later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. */ #include #include #include #include #include #include #include int dir_notify_enable __read_mostly = 1; static struct kmem_cache *dn_cache __read_mostly; static void redo_inode_mask(struct inode *inode) { unsigned long new_mask; struct dnotify_struct *dn; new_mask = 0; for (dn = inode->i_dnotify; dn != NULL; dn = dn->dn_next) new_mask |= dn->dn_mask & ~DN_MULTISHOT; inode->i_dnotify_mask = new_mask; } void dnotify_flush(struct file *filp, fl_owner_t id) { struct dnotify_struct *dn; struct dnotify_struct **prev; struct inode *inode; inode = filp->f_path.dentry->d_inode; if (!S_ISDIR(inode->i_mode)) return; spin_lock(&inode->i_lock); prev = &inode->i_dnotify; while ((dn = *prev) != NULL) { if ((dn->dn_owner == id) && (dn->dn_filp == filp)) { *prev = dn->dn_next; redo_inode_mask(inode); kmem_cache_free(dn_cache, dn); break; } prev = &dn->dn_next; } spin_unlock(&inode->i_lock); } int fcntl_dirnotify(int fd, struct file *filp, unsigned long arg) { struct dnotify_struct *dn; struct dnotify_struct *odn; struct dnotify_struct **prev; struct inode *inode; fl_owner_t id = current->files; int error = 0; if ((arg & ~DN_MULTISHOT) == 0) { dnotify_flush(filp, id); return 0; } if (!dir_notify_enable) return -EINVAL; inode = filp->f_path.dentry->d_inode; if (!S_ISDIR(inode->i_mode)) return -ENOTDIR; dn = kmem_cache_alloc(dn_cache, GFP_KERNEL); if (dn == NULL) return -ENOMEM; spin_lock(&inode->i_lock); prev = &inode->i_dnotify; while ((odn = *prev) != NULL) { if ((odn->dn_owner == id) && (odn->dn_filp == filp)) { odn->dn_fd = fd; odn->dn_mask |= arg; inode->i_dnotify_mask |= arg & ~DN_MULTISHOT; goto out_free; } prev = &odn->dn_next; } error = __f_setown(filp, task_pid(current), PIDTYPE_PID, 0); if (error) goto out_free; dn->dn_mask = arg; dn->dn_fd = fd; dn->dn_filp = filp; dn->dn_owner = id; inode->i_dnotify_mask |= arg & ~DN_MULTISHOT; dn->dn_next = inode->i_dnotify; inode->i_dnotify = dn; spin_unlock(&inode->i_lock); if (filp->f_op && filp->f_op->dir_notify) return filp->f_op->dir_notify(filp, arg); return 0; out_free: spin_unlock(&inode->i_lock); kmem_cache_free(dn_cache, dn); return error; } void __inode_dir_notify(struct inode *inode, unsigned long event) { struct dnotify_struct * dn; struct dnotify_struct **prev; struct fown_struct * fown; int changed = 0; spin_lock(&inode->i_lock); prev = &inode->i_dnotify; while ((dn = *prev) != NULL) { if ((dn->dn_mask & event) == 0) { prev = &dn->dn_next; continue; } fown = &dn->dn_filp->f_owner; send_sigio(fown, dn->dn_fd, POLL_MSG); if (dn->dn_mask & DN_MULTISHOT) prev = &dn->dn_next; else { *prev = dn->dn_next; changed = 1; kmem_cache_free(dn_cache, dn); } } if (changed) redo_inode_mask(inode); spin_unlock(&inode->i_lock); } EXPORT_SYMBOL(__inode_dir_notify); /* * This is hopelessly wrong, but unfixable without API changes. At * least it doesn't oops the kernel... * * To safely access ->d_parent we need to keep d_move away from it. Use the * dentry's d_lock for this. */ void dnotify_parent(struct dentry *dentry, unsigned long event) { struct dentry *parent; if (!dir_notify_enable) return; spin_lock(&dentry->d_lock); parent = dentry->d_parent; if (parent->d_inode->i_dnotify_mask & event) { dget(parent); spin_unlock(&dentry->d_lock); __inode_dir_notify(parent->d_inode, event); dput(parent); } else { spin_unlock(&dentry->d_lock); } } EXPORT_SYMBOL_GPL(dnotify_parent); static int __init dnotify_init(void) { dn_cache = kmem_cache_create("dnotify_cache", sizeof(struct dnotify_struct), 0, SLAB_PANIC, NULL); return 0; } module_init(dnotify_init) hack-change-initial-deps mirror/u-boot.git
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path: root/include/configs/FLAGADM.h
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/*
 * (C) Copyright 2001
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

/*
 * board/config.h - configuration options, board specific
 */

#ifndef __CONFIG_H
#define __CONFIG_H

/*
 * High Level Configuration Options
 * (easy to change)
 */

#define CONFIG_MPC823		1	/* This is a MPC823 CPU		*/
#define CONFIG_FLAGADM		1	/* ...on a FLAGA DM	*/
#define CONFIG_8xx_GCLK_FREQ 48000000	/*48MHz*/

#undef	CONFIG_8xx_CONS_SMC1		/* Console is on SMC1		*/
#define CONFIG_8xx_CONS_SMC2	1
#undef	CONFIG_8xx_CONS_NONE

#define CONFIG_BAUDRATE		115200	/* console baudrate = 115kbps	*/
#define CONFIG_BOOTDELAY	3	/* autoboot after 5 seconds	*/

#undef	CONFIG_CLOCKS_IN_MHZ

#if 0
#define CONFIG_BOOTARGS		"root=/dev/nfs rw ip=bootp"
#define CONFIG_BOOTCOMMAND							\
   "setenv bootargs root=/dev/ram ip=off panic=1;"     \
   "bootm 40040000 400e0000"
#else
#define CONFIG_BOOTARGS		"root=/dev/nfs rw ip=bootp panic=1"
#define CONFIG_BOOTCOMMAND	"bootp 0x400000; bootm 0x400000"
#endif /* 0|1*/

#define CONFIG_LOADS_ECHO	1	/* echo on for serial download	*/
#undef	CFG_LOADS_BAUD_CHANGE		/* don't allow baudrate change	*/

/*#define	CONFIG_WATCHDOG*/	/* watchdog enabled		*/
#undef	CONFIG_WATCHDOG			/* watchdog disabled		*/

/*
 * BOOTP options
 */
#define CONFIG_BOOTP_SUBNETMASK
#define CONFIG_BOOTP_GATEWAY
#define CONFIG_BOOTP_HOSTNAME
#define CONFIG_BOOTP_BOOTPATH
#define CONFIG_BOOTP_BOOTFILESIZE


/*
 * Command line configuration.
 */

#define CONFIG_CMD_BDI
#define CONFIG_CMD_IMI
#define CONFIG_CMD_CACHE
#define CONFIG_CMD_MEMORY
#define CONFIG_CMD_FLASH
#define CONFIG_CMD_LOADB
#define CONFIG_CMD_LOADS
#define CONFIG_CMD_ENV
#define CONFIG_CMD_REGINFO
#define CONFIG_CMD_IMMAP
#define CONFIG_CMD_NET


/*
 * Miscellaneous configurable options
 */
#define CFG_LONGHELP			/* undef to save memory		*/
#define CFG_PROMPT	"EEG> "		/* Monitor Command Prompt	*/
#if defined(CONFIG_CMD_KGDB)