util: introduce our own gperf based capability list

[elogind.git] / src / nspawn / nspawn.c

diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c
index fed150e364984ddf80d4b6a33215f4ec87682ea3..0466ddbff3ebae0f1b0569da607f8adbf93d27e9 100644 (file)
--- a/src/nspawn/nspawn.c
+++ b/src/nspawn/nspawn.c
@@ -90,6 +90,7 @@
 #include "base-filesystem.h"
 #include "barrier.h"
 #include "event-util.h"
+#include "cap-list.h"
 
 #ifdef HAVE_SECCOMP
 #include "seccomp-util.h"
@@ -401,7 +402,6 @@ static int parse_argv(int argc, char *argv[]) {
 
                         FOREACH_WORD_SEPARATOR(word, length, optarg, ",", state) {
                                 _cleanup_free_ char *t;
-                                cap_value_t cap;
 
                                 t = strndup(word, length);
                                 if (!t)
@@ -413,7 +413,10 @@ static int parse_argv(int argc, char *argv[]) {
                                         else
                                                 minus = (uint64_t) -1;
                                 } else {
-                                        if (cap_from_name(t, &cap) < 0) {
+                                        int cap;
+
+                                        cap = capability_from_name(t);
+                                        if (cap < 0) {
                                                 log_error("Failed to parse capability %s.", t);
                                                 return -EINVAL;
                                         }
@@ -808,8 +811,8 @@ static int mount_tmpfs(const char *dest) {
                         return log_oom();
 
                 r = mkdir_label(where, 0755);
-                if (r < 0 && errno != EEXIST)
-                        return log_error_errno(r, "creating mount point for tmpfs %s failed: %m", where);
+                if (r < 0 && r != -EEXIST)
+                        return log_error_errno(r, "Creating mount point for tmpfs %s failed: %m", where);
 
                 if (mount("tmpfs", where, "tmpfs", MS_NODEV|MS_STRICTATIME, *o) < 0)
                         return log_error_errno(errno, "tmpfs mount to %s failed: %m", where);
@@ -1589,16 +1592,19 @@ static int reset_audit_loginuid(void) {
 
 #define HOST_HASH_KEY SD_ID128_MAKE(1a,37,6f,c7,46,ec,45,0b,ad,a3,d5,31,06,60,5d,b1)
 #define CONTAINER_HASH_KEY SD_ID128_MAKE(c3,c4,f9,19,b5,57,b2,1c,e6,cf,14,27,03,9c,ee,a2)
+#define MACVLAN_HASH_KEY SD_ID128_MAKE(00,13,6d,bc,66,83,44,81,bb,0c,f9,51,1f,24,a6,6f)
 
-static int generate_mac(struct ether_addr *mac, sd_id128_t hash_key) {
-        int r;
-
+static int generate_mac(struct ether_addr *mac, sd_id128_t hash_key, uint64_t idx) {
         uint8_t result[8];
         size_t l, sz;
-        uint8_t *v;
+        uint8_t *v, *i;
+        int r;
 
         l = strlen(arg_machine);
         sz = sizeof(sd_id128_t) + l;
+        if (idx > 0)
+                sz += sizeof(idx);
+
         v = alloca(sz);
 
         /* fetch some persistent data unique to the host */
@@ -1608,7 +1614,11 @@ static int generate_mac(struct ether_addr *mac, sd_id128_t hash_key) {
 
         /* combine with some data unique (on this host) to this
          * container instance */
-        memcpy(v + sizeof(sd_id128_t), arg_machine, l);
+        i = mempcpy(v + sizeof(sd_id128_t), arg_machine, l);
+        if (idx > 0) {
+                idx = htole64(idx);
+                memcpy(i, &idx, sizeof(idx));
+        }
 
         /* Let's hash the host machine ID plus the container name. We
          * use a fixed, but originally randomly created hash key here. */
@@ -1641,17 +1651,13 @@ static int setup_veth(pid_t pid, char iface_name[IFNAMSIZ], int *ifi) {
         snprintf(iface_name, IFNAMSIZ - 1, "%s-%s",
                  arg_network_bridge ? "vb" : "ve", arg_machine);
 
-        r = generate_mac(&mac_container, CONTAINER_HASH_KEY);
-        if (r < 0) {
-                log_error("Failed to generate predictable MAC address for container side");
-                return r;
-        }
+        r = generate_mac(&mac_container, CONTAINER_HASH_KEY, 0);
+        if (r < 0)
+                return log_error_errno(r, "Failed to generate predictable MAC address for container side: %m");
 
-        r = generate_mac(&mac_host, HOST_HASH_KEY);
-        if (r < 0) {
-                log_error("Failed to generate predictable MAC address for host side");
-                return r;
-        }
+        r = generate_mac(&mac_host, HOST_HASH_KEY, 0);
+        if (r < 0)
+                return log_error_errno(r, "Failed to generate predictable MAC address for host side: %m");
 
         r = sd_rtnl_open(&rtnl, 0);
         if (r < 0)
@@ -1836,6 +1842,7 @@ static int move_network_interfaces(pid_t pid) {
 static int setup_macvlan(pid_t pid) {
         _cleanup_udev_unref_ struct udev *udev = NULL;
         _cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL;
+        unsigned idx = 0;
         char **i;
         int r;
 
@@ -1858,12 +1865,17 @@ static int setup_macvlan(pid_t pid) {
         STRV_FOREACH(i, arg_network_macvlan) {
                 _cleanup_rtnl_message_unref_ sd_rtnl_message *m = NULL;
                 _cleanup_free_ char *n = NULL;
+                struct ether_addr mac;
                 int ifi;
 
                 ifi = parse_interface(udev, *i);
                 if (ifi < 0)
                         return ifi;
 
+                r = generate_mac(&mac, MACVLAN_HASH_KEY, idx++);
+                if (r < 0)
+                        return log_error_errno(r, "Failed to create MACVLAN MAC address: %m");
+
                 r = sd_rtnl_message_new_link(rtnl, &m, RTM_NEWLINK, 0);
                 if (r < 0)
                         return log_error_errno(r, "Failed to allocate netlink message: %m");
@@ -1882,6 +1894,10 @@ static int setup_macvlan(pid_t pid) {
                 if (r < 0)
                         return log_error_errno(r, "Failed to add netlink interface name: %m");
 
+                r = sd_rtnl_message_append_ether_addr(m, IFLA_ADDRESS, &mac);
+                if (r < 0)
+                        return log_error_errno(r, "Failed to add netlink MAC address: %m");
+
                 r = sd_rtnl_message_append_u32(m, IFLA_NET_NS_PID, pid);
                 if (r < 0)
                         return log_error_errno(r, "Failed to add netlink namespace field: %m");