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Added a debugging command "devfs_node" to dump infos about the private devfs nodes for now.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20794 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2007-04-24 14:04:26 +00:00
parent cd95756047
commit 1c4b5b8a6a
1 changed files with 35 additions and 7 deletions
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42
src/system/kernel/fs/devfs.cpp
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@ -1,5 +1,5 @@
/* /*
* Copyright 2002-2006, Axel Dörfler, axeld@pinc-software.de. All rights reserved. * Copyright 2002-2007, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
* Distributed under the terms of the MIT License. * Distributed under the terms of the MIT License.
* *
* Copyright 2001-2002, Travis Geiselbrecht. All rights reserved. * Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
@ -181,7 +181,7 @@ load_driver(driver_entry *driver)
// load the module // load the module
image_id image = load_kernel_add_on(driver->path); image_id image = load_kernel_add_on(driver->path);
if (image < 0) if (image < B_OK)
return image; return image;
// for prettier debug output // for prettier debug output
@ -910,6 +910,31 @@ get_device_name(struct devfs_vnode *vnode, char *buffer, size_t size)
} }
static int
dump_node(int argc, char **argv)
{
if (argc < 2) {
kprintf("usage: %s <address>\n", argv[0]);
return 0;
}
struct devfs_vnode *vnode = (struct devfs_vnode *)strtoul(argv[1], NULL, 0);
if (vnode == NULL) {
kprintf("invalid node address\n");
return 0;
}
kprintf("DEVFS NODE: %p\n", vnode);
kprintf(" id: %Ld\n", vnode->id);
kprintf(" name: %s\n", vnode->name);
kprintf(" type: %x\n", vnode->stream.type);
kprintf(" parent: %p\n", vnode->parent);
kprintf(" dir_next: %p\n", vnode->dir_next);
return 0;
}
// #pragma mark - file system interface // #pragma mark - file system interface
@ -1019,7 +1044,7 @@ devfs_unmount(fs_volume _fs)
recursive_lock_destroy(&fs->lock); recursive_lock_destroy(&fs->lock);
free(fs); free(fs);
return 0; return B_OK;
} }
@ -1028,7 +1053,7 @@ devfs_sync(fs_volume fs)
{ {
TRACE(("devfs_sync: entry\n")); TRACE(("devfs_sync: entry\n"));
return 0; return B_OK;
} }
@ -1139,7 +1164,7 @@ devfs_put_vnode(fs_volume _fs, fs_vnode _v, bool reenter)
TRACE(("devfs_put_vnode: entry on vnode %p, id = %Ld, reenter %d\n", vnode, vnode->id, reenter)); TRACE(("devfs_put_vnode: entry on vnode %p, id = %Ld, reenter %d\n", vnode, vnode->id, reenter));
#endif #endif
return 0; // whatever return B_OK;
} }
@ -1294,14 +1319,14 @@ devfs_free_cookie(fs_volume _fs, fs_vnode _vnode, fs_cookie _cookie)
} }
free(cookie); free(cookie);
return 0; return B_OK;
} }
static status_t static status_t
devfs_fsync(fs_volume _fs, fs_vnode _v) devfs_fsync(fs_volume _fs, fs_vnode _v)
{ {
return 0; return B_OK;
} }
@ -1838,9 +1863,12 @@ devfs_std_ops(int32 op, ...)
{ {
switch (op) { switch (op) {
case B_MODULE_INIT: case B_MODULE_INIT:
add_debugger_command("devfs_node", &dump_node,
"info about a private devfs node");
return B_OK; return B_OK;
case B_MODULE_UNINIT: case B_MODULE_UNINIT:
remove_debugger_command("devfs_node", &dump_node);
return B_OK; return B_OK;
default: default: