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Merge pull request #26081 from yuwata/udev-symlink-remove

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udev: support -= operator for SYMLINK
This commit is contained in:
Luca Boccassi 2023-01-17 21:59:12 +00:00 committed by GitHub
commit 2cd1e475dd
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4 changed files with 28 additions and 9 deletions
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1
src/libsystemd/sd-device/device-private.h
View File

@ -38,6 +38,7 @@ void device_set_db_persist(sd_device *device);
void device_set_devlink_priority(sd_device *device, int priority);
int device_ensure_usec_initialized(sd_device *device, sd_device *device_old);
int device_add_devlink(sd_device *device, const char *devlink);
void device_remove_devlink(sd_device *device, const char *devlink);
bool device_has_devlink(sd_device *device, const char *devlink);
int device_add_property(sd_device *device, const char *property, const char *value);
int device_add_propertyf(sd_device *device, const char *key, const char *format, ...) _printf_(3, 4);

14
src/libsystemd/sd-device/sd-device.c
View File

@ -1489,6 +1489,20 @@ int device_add_devlink(sd_device *device, const char *devlink) {
return 0;
}
void device_remove_devlink(sd_device *device, const char *devlink) {
_cleanup_free_ char *s = NULL;
assert(device);
assert(devlink);
s = set_remove(device->devlinks, devlink);
if (!s)
return;
device->devlinks_generation++;
device->property_devlinks_outdated = true;
}
bool device_has_devlink(sd_device *device, const char *devlink) {
assert(device);
assert(devlink);

17
src/udev/udev-rules.c
View File

@ -579,9 +579,6 @@ static int parse_token(UdevRules *rules, const char *key, char *attr, UdevRuleOp
} else if (streq(key, "SYMLINK")) {
if (attr)
return log_token_invalid_attr(rules, key);
if (op == OP_REMOVE)
return log_token_invalid_op(rules, key);
if (!is_match) {
check_value_format_and_warn(rules, key, value, false);
r = rule_line_add_token(rule_line, TK_A_DEVLINK, op, value, NULL);
@ -2313,11 +2310,17 @@ static int udev_rule_apply_token_to_event(
if (truncated)
continue;
r = device_add_devlink(dev, filename);
if (r < 0)
return log_rule_error_errno(dev, rules, r, "Failed to add devlink '%s': %m", filename);
if (token->op == OP_REMOVE) {
device_remove_devlink(dev, filename);
log_rule_debug(dev, rules, "Dropped SYMLINK '%s'", p);
} else {
r = device_add_devlink(dev, filename);
if (r < 0)
return log_rule_error_errno(dev, rules, r, "Failed to add devlink '%s': %m", filename);
log_rule_debug(dev, rules, "Added SYMLINK '%s'", p);
}
log_rule_debug(dev, rules, "LINK '%s'", p);
p = next;
}
break;

5
test/udev-test.pl
View File

@ -212,12 +212,13 @@ EOF
{
devpath => "/devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda1",
exp_links => ["boot_disk1", "boot_diskXY1"],
not_exp_links => ["boot_diskXX1"],
not_exp_links => ["boot_diskXX1", "hoge"],
}],
rules => <<EOF
SUBSYSTEMS=="scsi", ATTRS{vendor}=="ATA", ATTRS{model}=="ST910021AS", ATTRS{scsi_level}=="6", ATTRS{rev}=="4.06", ATTRS{type}=="0", ATTRS{queue_depth}=="32", SYMLINK+="boot_diskXX%n"
SUBSYSTEMS=="scsi", ATTRS{vendor}=="ATA", ATTRS{model}=="ST910021AS", ATTRS{scsi_level}=="6", ATTRS{rev}=="4.06", ATTRS{type}=="0", ATTRS{queue_depth}=="1", SYMLINK+="boot_diskXY%n"
SUBSYSTEMS=="scsi", ATTRS{vendor}=="ATA", ATTRS{model}=="ST910021AS", ATTRS{scsi_level}=="6", ATTRS{rev}=="4.06", ATTRS{type}=="0", SYMLINK+="boot_disk%n"
SUBSYSTEMS=="scsi", ATTRS{vendor}=="ATA", ATTRS{model}=="ST910021AS", ATTRS{scsi_level}=="6", ATTRS{rev}=="4.06", ATTRS{type}=="0", SYMLINK+="boot_disk%n", SYMLINK+="hoge"
SUBSYSTEMS=="scsi", ATTRS{vendor}=="ATA", ATTRS{model}=="ST910021AS", ATTRS{scsi_level}=="6", ATTRS{rev}=="4.06", ATTRS{type}=="0", SYMLINK-="hoge"
EOF
},
{