diff options
Diffstat (limited to 'src/libsystemd/sd-bus/bus-kernel.c')
| -rw-r--r-- | src/libsystemd/sd-bus/bus-kernel.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/src/libsystemd/sd-bus/bus-kernel.c b/src/libsystemd/sd-bus/bus-kernel.c index f49fb5b394..8b961c38eb 100644 --- a/src/libsystemd/sd-bus/bus-kernel.c +++ b/src/libsystemd/sd-bus/bus-kernel.c @@ -1402,11 +1402,20 @@ static int bus_kernel_translate_policy(const BusNamePolicy *policy, struct kdbus return 0; } -int bus_kernel_open_bus_fd(const char *bus) { +int bus_kernel_open_bus_fd(const char *bus, char **path) { char *p; int fd; + size_t len; - p = alloca(strlen("/dev/kdbus/") + DECIMAL_STR_MAX(uid_t) + 1 + strlen(bus) + strlen("/bus") + 1); + len = strlen("/dev/kdbus/") + DECIMAL_STR_MAX(uid_t) + 1 + strlen(bus) + strlen("/bus") + 1; + + if (path) { + p = malloc(len); + if (!p) + return -ENOMEM; + *path = p; + } else + p = alloca(len); sprintf(p, "/dev/kdbus/" UID_FMT "-%s/bus", getuid(), bus); fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC); @@ -1549,7 +1558,7 @@ int bus_kernel_create_monitor(const char *bus) { assert(bus); - fd = bus_kernel_open_bus_fd(bus); + fd = bus_kernel_open_bus_fd(bus, NULL); if (fd < 0) return fd; |