forked from pool/systemd
0ce42fd6b6
- Rename remaning udev patches (clean-up).
- Generate %{_libexecdir}/modules-load.d/sg.conf so we load sg module at
boot time not from udev (bnc#761109).
- Drop unused patches:
1001-Reinstate-TIMEOUT-handling.patch
1005-udev-fix-sg-autoload-regression.patch
1026-re-add-persistent-net.patch
- Rename remaning udev patches (clean-up).
- Generate %{_libexecdir}/modules-load.d/sg.conf so we load sg module at
boot time not from udev (bnc#761109).
- Drop unused patches:
1001-Reinstate-TIMEOUT-handling.patch
1005-udev-fix-sg-autoload-regression.patch
1026-re-add-persistent-net.patch
OBS-URL: https://build.opensuse.org/request/show/173325
OBS-URL: https://build.opensuse.org/package/show/Base:System/systemd?expand=0&rev=371
121 lines
4.1 KiB
Diff
121 lines
4.1 KiB
Diff
From: Robert Milasan <rmilasan@suse.com>
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Date: Thu, 12 Jul 2012 15:56:34 +0000
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Subject: re-enable by_path links for ata devices
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Fix by-path links for ATA transport (bnc#770910)
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---
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src/udev/udev-builtin-path_id.c | 92 +++++++++++++++++++++++++++++++++++------
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1 file changed, 80 insertions(+), 12 deletions(-)
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diff --git a/src/udev/udev-builtin-path_id.c b/src/udev/udev-builtin-path_id.c
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index da02731..a77d4e8 100644
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--- a/src/udev/udev-builtin-path_id.c
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+++ b/src/udev/udev-builtin-path_id.c
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@@ -338,6 +338,85 @@ static struct udev_device *handle_scsi_hyperv(struct udev_device *parent, char *
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return parent;
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}
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+static struct udev_device *handle_ata(struct udev_device *parent, char **path)
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+{
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+ struct udev_device *hostdev;
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+ int host, bus, target, lun;
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+ const char *name;
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+ char *base;
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+ char *pos;
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+ DIR *dir;
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+ struct dirent *dent;
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+ int basenum, len;
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+
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+ hostdev = udev_device_get_parent_with_subsystem_devtype(parent, "scsi", "scsi_host");
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+ if (hostdev == NULL)
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+ return NULL;
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+
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+ name = udev_device_get_sysname(parent);
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+ if (sscanf(name, "%d:%d:%d:%d", &host, &bus, &target, &lun) != 4)
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+ return NULL;
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+
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+ /* rebase ata offset to get the local relative number */
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+ basenum = -1;
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+ base = strdup(udev_device_get_syspath(hostdev));
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+ if (base == NULL)
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+ return NULL;
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+ pos = strrchr(base, '/');
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+ if (pos == NULL) {
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+ parent = NULL;
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+ goto out;
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+ }
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+ pos[0] = '\0';
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+ len = strlen(base) - 5;
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+ if (len <= 0) {
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+ parent = NULL;
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+ goto out;
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+ }
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+ base[len] = '\0';
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+ dir = opendir(base);
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+ if (dir == NULL) {
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+ parent = NULL;
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+ goto out;
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+ }
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+ for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
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+ char *rest;
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+ int i;
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+
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+ if (dent->d_name[0] == '.')
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+ continue;
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+ if (dent->d_type != DT_DIR && dent->d_type != DT_LNK)
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+ continue;
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+ if (strncmp(dent->d_name, "ata", 3) != 0)
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+ continue;
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+ i = strtoul(&dent->d_name[3], &rest, 10);
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+
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+ /* ata devices start with 1, so decrease by 1 if i is bigger then 0 */
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+ if (i > 0)
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+ i--;
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+ if (rest[0] != '\0')
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+ continue;
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+ /*
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+ * find the smallest number; the host really needs to export its
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+ * own instance number per parent device; relying on the global host
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+ * enumeration and plainly rebasing the numbers sounds unreliable
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+ */
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+ if (basenum == -1 || i < basenum)
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+ basenum = i;
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+ }
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+ closedir(dir);
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+ if (basenum == -1) {
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+ parent = NULL;
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+ goto out;
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+ }
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+ host -= basenum;
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+
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+ path_prepend(path, "scsi-%u:%u:%u:%u", host, bus, target, lun);
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+out:
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+ free(base);
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+ return hostdev;
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+}
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+
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static struct udev_device *handle_scsi(struct udev_device *parent, char **path)
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{
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const char *devtype;
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@@ -374,19 +453,8 @@ static struct udev_device *handle_scsi(struct udev_device *parent, char **path)
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goto out;
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}
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- /*
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- * We do not support the ATA transport class, it uses global counters
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- * to name the ata devices which numbers spread across multiple
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- * controllers.
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- *
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- * The real link numbers are not exported. Also, possible chains of ports
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- * behind port multipliers cannot be composed that way.
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- *
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- * Until all that is solved at the kernel level, there are no by-path/
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- * links for ATA devices.
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- */
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if (strstr(name, "/ata") != NULL) {
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- parent = NULL;
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+ parent = handle_ata(parent, path);
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goto out;
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}
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