Tests: Handle rotations happening on two separate days during testing

[lttng-tools.git] / src / bin / lttng-sessiond / syscall.c

diff --git a/src/bin/lttng-sessiond/syscall.c b/src/bin/lttng-sessiond/syscall.c
index 6ee38bd0fa27a3f51c5541f8601a890d130b8aed..7d0a92b6b1376ced33f150fa677cf25b4c0d9315 100644 (file)
--- a/src/bin/lttng-sessiond/syscall.c
+++ b/src/bin/lttng-sessiond/syscall.c
@@ -16,6 +16,8 @@
  */
 
 #define _LGPL_SOURCE
+#include <stdbool.h>
+
 #include <common/bitfield.h>
 #include <common/common.h>
 #include <common/kernel-ctl/kernel-ctl.h>
@@ -43,7 +45,8 @@ int syscall_init_table(void)
        size_t nbmem;
        FILE *fp;
        /* Syscall data from the kernel. */
-       size_t index;
+       size_t index = 0;
+       bool at_least_one_syscall = false;
        uint32_t bitness;
        char name[SYSCALL_NAME_LEN];
 
@@ -76,12 +79,13 @@ int syscall_init_table(void)
                                name = %" XSTR(SYSCALL_NAME_LEN) "[^;]; \
                                bitness = %u; };\n",
                                &index, name, &bitness) == 3) {
-               if (index >= nbmem ) {
+               at_least_one_syscall = true;
+               if (index >= nbmem) {
                        struct syscall *new_list;
                        size_t new_nbmem;
 
                        /* Double memory size. */
-                       new_nbmem = max(index, nbmem << 1);
+                       new_nbmem = max(index + 1, nbmem << 1);
                        if (new_nbmem > (SIZE_MAX / sizeof(*new_list))) {
                                /* Overflow, stop everything, something went really wrong. */
                                ERR("Syscall listing memory size overflow. Stopping");
@@ -123,7 +127,10 @@ int syscall_init_table(void)
                */
        }
 
-       syscall_table_nb_entry = index;
+       /* Index starts at 0. */
+       if (at_least_one_syscall) {
+               syscall_table_nb_entry = index + 1;
+       }
 
        ret = 0;