in_tail: Fix 32 bit support in file hash logic

On a 32 bit system, the inode number is 32 bits, not 64, so the format string expecting a 64bit parameter would end up with junk data and continue to think a new file was found, leaking file descriptors and eventually preventing fluent bit from running.

Cast the inode parameter when generating the file hash to 64 bits to avoid differences on 32 versus 64 bit systems.

Signed-off-by: Megan E. Smith <[email protected]>
Signed-off-by: Manal Geries <[email protected]>

Author: megaloni

plugins/in_tail/tail_file.c

@@ -75,7 +75,7 @@ static int stat_to_hash_bits(struct flb_tail_config *ctx, struct stat *st,
     st_dev = stat_get_st_dev(st);
 
     len = snprintf(tmp, sizeof(tmp) - 1, "%" PRIu64 ":%" PRIu64,
-                   st_dev, st->st_ino);
+                   st_dev, (uint64_t)st->st_ino);
 
     *out_hash = cfl_hash_64bits(tmp, len);
     return 0;
@@ -95,7 +95,7 @@ static int stat_to_hash_key(struct flb_tail_config *ctx, struct stat *st,
 
     st_dev = stat_get_st_dev(st);
     tmp = flb_sds_printf(&buf, "%" PRIu64 ":%" PRIu64,
-                         st_dev, st->st_ino);
+                         st_dev, (uint64_t)st->st_ino);
     if (!tmp) {
         flb_sds_destroy(buf);
         return -1;
@@ -1794,7 +1794,7 @@ int flb_tail_file_purge(struct flb_input_instance *ins,
                 flb_plg_debug(ctx->ins,
                               "inode=%"PRIu64" purge rotated file %s " \
                               "(offset=%"PRId64" / size = %"PRIu64")",
-                              file->inode, file->name, file->offset, st.st_size);
+                              file->inode, file->name, file->offset, (uint64_t)st.st_size);
                 if (file->pending_bytes > 0 && flb_input_buf_paused(ins)) {
                     flb_plg_warn(ctx->ins, "purged rotated file while data "
                                  "ingestion is paused, consider increasing "