diff options
| author | Daniel Mack <zonque@gmail.com> | 2014-05-13 01:28:09 +0200 |
|---|---|---|
| committer | Daniel Mack <zonque@gmail.com> | 2014-08-17 21:47:00 +0200 |
| commit | a6082d778ee4b97ec3eb6d3266cefc024c5d60f7 (patch) | |
| tree | 9384d75776ffb4b1352f623982464743b7ca5b84 /src/libsystemd/sd-bus/bus-kernel.c | |
| parent | a6a4f528899b1dab47408733b4a423c66ea40f7a (diff) | |
kdbus: switch over to generic memfd implementation (ABI+API break)
Diffstat (limited to 'src/libsystemd/sd-bus/bus-kernel.c')
| -rw-r--r-- | src/libsystemd/sd-bus/bus-kernel.c | 21 |
1 files changed, 3 insertions, 18 deletions
diff --git a/src/libsystemd/sd-bus/bus-kernel.c b/src/libsystemd/sd-bus/bus-kernel.c index 8b961c38eb..4156b90265 100644 --- a/src/libsystemd/sd-bus/bus-kernel.c +++ b/src/libsystemd/sd-bus/bus-kernel.c @@ -1111,9 +1111,6 @@ int bus_kernel_pop_memfd(sd_bus *bus, void **address, size_t *mapped, size_t *al if (bus->n_memfd_cache <= 0) { _cleanup_free_ char *g = NULL; - struct kdbus_cmd_memfd_make *cmd; - struct kdbus_item *item; - size_t l, sz; int r; assert_se(pthread_mutex_unlock(&bus->memfd_cache_mutex) >= 0); @@ -1124,26 +1121,14 @@ int bus_kernel_pop_memfd(sd_bus *bus, void **address, size_t *mapped, size_t *al if (!g) return -ENOMEM; - l = strlen(g); - sz = ALIGN8(offsetof(struct kdbus_cmd_memfd_make, items)) + - ALIGN8(offsetof(struct kdbus_item, str)) + - l + 1; - cmd = alloca0(sz); - cmd->size = sz; - - item = cmd->items; - item->size = ALIGN8(offsetof(struct kdbus_item, str)) + l + 1; - item->type = KDBUS_ITEM_MEMFD_NAME; - memcpy(item->str, g, l + 1); - - r = ioctl(bus->input_fd, KDBUS_CMD_MEMFD_NEW, cmd); + r = memfd_create(g, 0, MFD_ALLOW_SEALING); if (r < 0) return -errno; *address = NULL; *mapped = 0; *allocated = 0; - return cmd->fd; + return r; } c = &bus->memfd_cache[--bus->n_memfd_cache]; @@ -1195,7 +1180,7 @@ void bus_kernel_push_memfd(sd_bus *bus, int fd, void *address, size_t mapped, si /* If overly long, let's return a bit to the OS */ if (mapped > max_mapped) { - assert_se(ioctl(fd, KDBUS_CMD_MEMFD_SIZE_SET, &max_mapped) >= 0); + assert_se(ftruncate(fd, max_mapped) >= 0); assert_se(munmap((uint8_t*) address + max_mapped, PAGE_ALIGN(mapped - max_mapped)) >= 0); c->mapped = c->allocated = max_mapped; } else { |