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udev-115: Kernel events filtering improvement.

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In order to avoid creating dozens of ttys and ptys, we have to discard 
some specific kernel events.


git-svn-id: https://svn.o-hand.com/repos/poky/trunk@2820 311d38ba-8fff-0310-9ca6-ca027cbcb966
This commit is contained in:
Samuel Ortiz
2007-09-28 17:47:54 +00:00
parent cfa5b19e23
commit 5dfdab596c
2 changed files with 105 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

104
meta/packages/udev/udev-115/udevtrigger_add_devname_filtering.patch Normal file
View File

@@ -0,0 +1,104 @@
---
udevtrigger.c | 40 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)
Index: udev-115/udevtrigger.c
===================================================================
--- udev-115.orig/udevtrigger.c 2007-08-24 01:29:54.000000000 +0200
+++ udev-115/udevtrigger.c 2007-09-21 18:45:28.000000000 +0200
@@ -39,6 +39,8 @@
LIST_HEAD(device_list);
LIST_HEAD(filter_subsystem_match_list);
LIST_HEAD(filter_subsystem_nomatch_list);
+LIST_HEAD(filter_kernel_match_list);
+LIST_HEAD(filter_kernel_nomatch_list);
LIST_HEAD(filter_attr_match_list);
LIST_HEAD(filter_attr_nomatch_list);
@@ -218,6 +220,26 @@
return 0;
}
+static int kernel_filtered(const char *kernel)
+{
+ struct name_entry *loop_name;
+
+ /* skip devices matching the prohibited kernel device names */
+ list_for_each_entry(loop_name, &filter_kernel_nomatch_list, node)
+ if (fnmatch(loop_name->name, kernel, 0) == 0)
+ return 1;
+
+ /* skip devices not matching the listed kernel device names */
+ if (!list_empty(&filter_kernel_match_list)) {
+ list_for_each_entry(loop_name, &filter_kernel_match_list, node)
+ if (fnmatch(loop_name->name, kernel, 0) == 0)
+ return 0;
+ return 1;
+ }
+
+ return 0;
+}
+
static int attr_filtered(const char *path)
{
struct name_entry *loop_name;
@@ -296,6 +318,9 @@
if (dent2->d_name[0] == '.')
continue;
+ if (kernel_filtered(dent2->d_name))
+ continue;
+
strlcpy(dirname2, dirname, sizeof(dirname2));
strlcat(dirname2, "/", sizeof(dirname2));
strlcat(dirname2, dent2->d_name, sizeof(dirname2));
@@ -402,6 +427,9 @@
if (!strcmp(dent2->d_name, "device"))
continue;
+ if (kernel_filtered(dent2->d_name))
+ continue;
+
strlcpy(dirname2, dirname, sizeof(dirname2));
strlcat(dirname2, "/", sizeof(dirname2));
strlcat(dirname2, dent2->d_name, sizeof(dirname2));
@@ -458,6 +486,8 @@
{ "subsystem-nomatch", 1, NULL, 'S' },
{ "attr-match", 1, NULL, 'a' },
{ "attr-nomatch", 1, NULL, 'A' },
+ { "kernel-match", 1, NULL, 'k' },
+ { "kernel-nomatch", 1, NULL, 'K' },
{}
};
@@ -496,6 +526,12 @@
case 'A':
name_list_add(&filter_attr_nomatch_list, optarg, 0);
break;
+ case 'k':
+ name_list_add(&filter_kernel_match_list, optarg, 0);
+ break;
+ case 'K':
+ name_list_add(&filter_kernel_nomatch_list, optarg, 0);
+ break;
case 'h':
printf("Usage: udevtrigger OPTIONS\n"
" --verbose print the list of devices while running\n"
@@ -504,6 +540,8 @@
" marked as failed during a previous run\n"
" --subsystem-match=<subsystem> trigger devices from a matching subystem\n"
" --subsystem-nomatch=<subsystem> exclude devices from a matching subystem\n"
+ " --kernel-match=<subsystem> trigger devices from a matching kernel device name\n"
+ " --kernel-nomatch=<subsystem> exclude devices from a matching kernel device name\n"
" --attr-match=<file[=<value>]> trigger devices with a matching sysfs\n"
" attribute\n"
" --attr-nomatch=<file[=<value>]> exclude devices with a matching sysfs\n"
@@ -549,6 +587,8 @@
exit:
name_list_cleanup(&filter_subsystem_match_list);
name_list_cleanup(&filter_subsystem_nomatch_list);
+ name_list_cleanup(&filter_kernel_match_list);
+ name_list_cleanup(&filter_kernel_nomatch_list);
name_list_cleanup(&filter_attr_match_list);
name_list_cleanup(&filter_attr_nomatch_list);

1
meta/packages/udev/udev_115.bb
View File

@@ -9,6 +9,7 @@ SRC_URI = "http://kernel.org/pub/linux/utils/kernel/hotplug/udev-${PV}.tar.gz \
file://noasmlinkage.patch;patch=1 \
file://flags.patch;patch=1 \
file://vol_id_ld.patch;patch=1 \
file://udevtrigger_add_devname_filtering.patch;patch=1 \
file://mount.blacklist \
"