stop complaining about unknown kernel cmdline options

[elogind.git] / src / gpt-auto-generator / gpt-auto-generator.c

diff --git a/src/gpt-auto-generator/gpt-auto-generator.c b/src/gpt-auto-generator/gpt-auto-generator.c
index 67d0f2a5b902603ed255a44dc050403a9c46739a..7dcbbfe497a52b66f0bf23de38222813b63de115 100644 (file)
--- a/src/gpt-auto-generator/gpt-auto-generator.c
+++ b/src/gpt-auto-generator/gpt-auto-generator.c
@@ -44,15 +44,13 @@
 #include "gpt.h"
 #include "fileio.h"
 #include "efivars.h"
+#include "blkid-util.h"
 
 static const char *arg_dest = "/tmp";
 static bool arg_enabled = true;
 static bool arg_root_enabled = true;
 static bool arg_root_rw = false;
 
-DEFINE_TRIVIAL_CLEANUP_FUNC(blkid_probe, blkid_free_probe);
-#define _cleanup_blkid_free_probe_ _cleanup_(blkid_free_probep)
-
 static int add_swap(const char *path) {
         _cleanup_free_ char *name = NULL, *unit = NULL, *lnk = NULL;
         _cleanup_fclose_ FILE *f = NULL;
@@ -103,7 +101,7 @@ static int add_swap(const char *path) {
         return 0;
 }
 
-static int add_cryptsetup(const char *id, const char *what, char **device) {
+static int add_cryptsetup(const char *id, const char *what, bool rw, char **device) {
         _cleanup_free_ char *e = NULL, *n = NULL, *p = NULL, *d = NULL, *to = NULL;
         _cleanup_fclose_ FILE *f = NULL;
         char *from, *ret;
@@ -151,10 +149,10 @@ static int add_cryptsetup(const char *id, const char *what, char **device) {
                 "Type=oneshot\n"
                 "RemainAfterExit=yes\n"
                 "TimeoutSec=0\n" /* the binary handles timeouts anyway */
-                "ExecStart=" SYSTEMD_CRYPTSETUP_PATH " attach '%s' '%s'\n"
+                "ExecStart=" SYSTEMD_CRYPTSETUP_PATH " attach '%s' '%s' '' '%s'\n"
                 "ExecStop=" SYSTEMD_CRYPTSETUP_PATH " detach '%s'\n",
                 d, d,
-                id, what,
+                id, what, rw ? "" : "read-only",
                 id);
 
         fflush(f);
@@ -225,7 +223,7 @@ static int add_mount(
                 const char *what,
                 const char *where,
                 const char *fstype,
-                const char *options,
+                bool rw,
                 const char *description,
                 const char *post) {
 
@@ -242,7 +240,7 @@ static int add_mount(
 
         if (streq_ptr(fstype, "crypto_LUKS")) {
 
-                r = add_cryptsetup(id, what, &crypto_what);
+                r = add_cryptsetup(id, what, rw, &crypto_what);
                 if (r < 0)
                         return r;
 
@@ -288,8 +286,7 @@ static int add_mount(
         if (fstype)
                 fprintf(f, "Type=%s\n", fstype);
 
-        if (options)
-                fprintf(f, "Options=%s\n", options);
+        fprintf(f, "Options=%s\n", rw ? "rw" : "ro");
 
         fflush(f);
         if (ferror(f)) {
@@ -316,6 +313,7 @@ static int probe_and_add_mount(
                 const char *id,
                 const char *what,
                 const char *where,
+                bool rw,
                 const char *description,
                 const char *post) {
 
@@ -367,7 +365,7 @@ static int probe_and_add_mount(
                         what,
                         where,
                         fstype,
-                        NULL,
+                        rw,
                         description,
                         post);
 }
@@ -383,6 +381,7 @@ static int enumerate_partitions(dev_t devnum) {
         struct udev_device *parent = NULL;
         const char *node, *pttype, *devtype;
         int home_nr = -1, srv_nr = -1;
+        bool home_rw = true, srv_rw = true;
         blkid_partlist pl;
         int r, k;
         dev_t pn;
@@ -396,22 +395,30 @@ static int enumerate_partitions(dev_t devnum) {
                 return log_oom();
 
         parent = udev_device_get_parent(d);
-        if (!parent)
-                return log_oom();
+        if (!parent) {
+                log_debug("Not a partitioned device, ignoring.");
+                return 0;
+        }
 
         /* Does it have a devtype? */
         devtype = udev_device_get_devtype(parent);
-        if (!devtype)
+        if (!devtype) {
+                log_debug("Parent doesn't have a device type, ignoring.");
                 return 0;
+        }
 
         /* Is this a disk or a partition? We only care for disks... */
-        if (!streq(devtype, "disk"))
+        if (!streq(devtype, "disk")) {
+                log_debug("Parent isn't a raw disk, ignoring.");
                 return 0;
+        }
 
         /* Does it have a device node? */
         node = udev_device_get_devnode(parent);
-        if (!node)
+        if (!node) {
+                log_debug("Parent device does not have device node, ignoring.");
                 return 0;
+        }
 
         log_debug("Root device %s.", node);
 
@@ -429,8 +436,6 @@ static int enumerate_partitions(dev_t devnum) {
                 return -errno;
         }
 
-        blkid_probe_enable_superblocks(b, 1);
-        blkid_probe_set_superblocks_flags(b, BLKID_SUBLKS_TYPE);
         blkid_probe_enable_partitions(b, 1);
         blkid_probe_set_partitions_flags(b, BLKID_PARTS_ENTRY_DETAILS);
 
@@ -455,8 +460,10 @@ static int enumerate_partitions(dev_t devnum) {
         }
 
         /* We only do this all for GPT... */
-        if (!streq_ptr(pttype, "gpt"))
+        if (!streq_ptr(pttype, "gpt")) {
+                log_debug("Not a GPT partition table, ignoring.");
                 return 0;
+        }
 
         errno = 0;
         pl = blkid_probe_get_partitions(b);
@@ -464,7 +471,7 @@ static int enumerate_partitions(dev_t devnum) {
                 if (errno == 0)
                         return log_oom();
 
-                log_error("Failed to list of partitions of %s: %m", node);
+                log_error("Failed to list partitions of %s: %m", node);
                 return -errno;
         }
 
@@ -494,6 +501,7 @@ static int enumerate_partitions(dev_t devnum) {
                 blkid_partition pp;
                 dev_t qn;
                 int nr;
+                unsigned long long flags;
 
                 q = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item));
                 if (!q)
@@ -517,6 +525,13 @@ static int enumerate_partitions(dev_t devnum) {
                 if (!pp)
                         continue;
 
+                flags = blkid_partition_get_flags(pp);
+
+                /* Ignore partitions that are not marked for automatic
+                 * mounting on discovery */
+                if (flags & GPT_FLAG_NO_AUTO)
+                        continue;
+
                 nr = blkid_partition_get_partno(pp);
                 if (nr < 0)
                         continue;
@@ -530,6 +545,11 @@ static int enumerate_partitions(dev_t devnum) {
 
                 if (sd_id128_equal(type_id, GPT_SWAP)) {
 
+                        if (flags & GPT_FLAG_READ_ONLY) {
+                                log_debug("%s marked as read-only swap partition, which is bogus, ignoring.", subnode);
+                                continue;
+                        }
+
                         k = add_swap(subnode);
                         if (k < 0)
                                 r = k;
@@ -541,6 +561,7 @@ static int enumerate_partitions(dev_t devnum) {
                                 continue;
 
                         home_nr = nr;
+                        home_rw = !(flags & GPT_FLAG_READ_ONLY),
 
                         free(home);
                         home = strdup(subnode);
@@ -554,6 +575,7 @@ static int enumerate_partitions(dev_t devnum) {
                                 continue;
 
                         srv_nr = nr;
+                        srv_rw = !(flags & GPT_FLAG_READ_ONLY),
 
                         free(srv);
                         srv = strdup(node);
@@ -563,13 +585,13 @@ static int enumerate_partitions(dev_t devnum) {
         }
 
         if (home) {
-                k = probe_and_add_mount("home", home, "/home", "Home Partition", SPECIAL_LOCAL_FS_TARGET);
+                k = probe_and_add_mount("home", home, "/home", home_rw, "Home Partition", SPECIAL_LOCAL_FS_TARGET);
                 if (k < 0)
                         r = k;
         }
 
         if (srv) {
-                k = probe_and_add_mount("srv", srv, "/srv", "Server Data Partition", SPECIAL_LOCAL_FS_TARGET);
+                k = probe_and_add_mount("srv", srv, "/srv", srv_rw, "Server Data Partition", SPECIAL_LOCAL_FS_TARGET);
                 if (k < 0)
                         r = k;
         }
@@ -673,8 +695,6 @@ static int parse_proc_cmdline_item(const char *key, const char *value) {
                 arg_root_rw = true;
         else if (streq(key, "ro") && !value)
                 arg_root_rw = false;
-        else if (startswith(key, "systemd.gpt-auto.") || startswith(key, "rd.systemd.gpt-auto."))
-                log_warning("Unknown kernel switch %s. Ignoring.", key);
 
         return 0;
 }
@@ -704,10 +724,10 @@ static int add_root_mount(void) {
 
         return add_mount(
                         "root",
-                        "/dev/disk/by-id/gpt-auto-root",
+                        "/dev/gpt-auto-root",
                         in_initrd() ? "/sysroot" : "/",
                         NULL,
-                        arg_root_rw ? "rw" : "ro",
+                        arg_root_rw,
                         "Root Partition",
                         in_initrd() ? SPECIAL_INITRD_ROOT_FS_TARGET : SPECIAL_LOCAL_FS_TARGET);
 #else