tree-wide: use xsprintf() where applicable

Also add a coccinelle receipt to help with such transitions.

4 files changed, 15 insertions, 5 deletions

diff --git a/coccinelle/xsprintf.cocci b/coccinelle/xsprintf.cocci
new file mode 100644
index 000000000..401216ad7
--- /dev/null
+++ b/coccinelle/xsprintf.cocci
@@ -0,0 +1,6 @@
+@@
+expression e, fmt;
+expression list vaargs;
+@@
+- snprintf(e, sizeof(e), fmt, vaargs);
++ xsprintf(e, fmt, vaargs);
diff --git a/src/basic/log.c b/src/basic/log.c
index 35027de30..a5ee8f861 100644
--- a/src/basic/log.c
+++ b/src/basic/log.c
@@ -359,7 +359,7 @@ static int write_to_console(
         highlight = LOG_PRI(level) <= LOG_ERR && show_color;
 
         if (show_location) {
-                snprintf(location, sizeof(location), "(%s:%i) ", file, line);
+                xsprintf(location, "(%s:%i) ", file, line);
                 IOVEC_SET_STRING(iovec[n++], location);
         }
 
@@ -788,7 +788,7 @@ static void log_assert(
                 return;
 
         DISABLE_WARNING_FORMAT_NONLITERAL;
-        snprintf(buffer, sizeof(buffer), format, text, file, line, func);
+        xsprintf(buffer, format, text, file, line, func);
         REENABLE_WARNING;
 
         log_abort_msg = buffer;
diff --git a/src/libelogind/sd-bus/bus-kernel.c b/src/libelogind/sd-bus/bus-kernel.c
index 2391c0cd2..761219b0c 100644
--- a/src/libelogind/sd-bus/bus-kernel.c
+++ b/src/libelogind/sd-bus/bus-kernel.c
@@ -47,6 +47,7 @@
 #include "formats-util.h"
 #include "memfd-util.h"
 #include "parse-util.h"
+#include "stdio-util.h"
 #include "string-util.h"
 #include "strv.h"
 #include "user-util.h"
@@ -849,7 +850,8 @@ static int bus_kernel_make_message(sd_bus *bus, struct kdbus_msg *k) {
         if (k->src_id == KDBUS_SRC_ID_KERNEL)
                 bus_message_set_sender_driver(bus, m);
         else {
-                snprintf(m->sender_buffer, sizeof(m->sender_buffer), ":1.%llu", (unsigned long long) k->src_id);
+                xsprintf(m->sender_buffer, ":1.%llu",
+                         (unsigned long long)k->src_id);
                 m->sender = m->creds.unique_name = m->sender_buffer;
         }
 
@@ -860,7 +862,8 @@ static int bus_kernel_make_message(sd_bus *bus, struct kdbus_msg *k) {
         else if (k->dst_id == KDBUS_DST_ID_NAME)
                 m->destination = bus->unique_name; /* fill in unique name if the well-known name is missing */
         else {
-                snprintf(m->destination_buffer, sizeof(m->destination_buffer), ":1.%llu", (unsigned long long) k->dst_id);
+                xsprintf(m->destination_buffer, ":1.%llu",
+                         (unsigned long long)k->dst_id);
                 m->destination = m->destination_buffer;
         }
 
diff --git a/src/login/logind-seat.c b/src/login/logind-seat.c
index 813ab153e..4b99c1869 100644
--- a/src/login/logind-seat.c
+++ b/src/login/logind-seat.c
@@ -34,6 +34,7 @@
 #include "logind-seat.h"
 #include "mkdir.h"
 #include "parse-util.h"
+#include "stdio-util.h"
 #include "string-util.h"
 #include "terminal-util.h"
 #include "util.h"
@@ -182,7 +183,7 @@ static int vt_allocate(unsigned int vtnr) {
 
         assert(vtnr >= 1);
 
-        snprintf(p, sizeof(p), "/dev/tty%u", vtnr);
+        xsprintf(p, "/dev/tty%u", vtnr);
         fd = open_terminal(p, O_RDWR|O_NOCTTY|O_CLOEXEC);
         if (fd < 0)
                 return -errno;