diff options
Diffstat (limited to 'util')
| -rw-r--r-- | util/cbfstool/partitioned_file.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/util/cbfstool/partitioned_file.c b/util/cbfstool/partitioned_file.c index b6d4f1b808..6e75600cca 100644 --- a/util/cbfstool/partitioned_file.c +++ b/util/cbfstool/partitioned_file.c @@ -8,6 +8,7 @@ #include <assert.h> #include <stdlib.h> #include <string.h> +#include <sys/file.h> struct partitioned_file { struct fmap *fmap; @@ -57,7 +58,7 @@ static partitioned_file_t *reopen_flat_file(const char *filename, access_mode = write_access ? "rb+" : "rb"; file->stream = fopen(filename, access_mode); - if (!file->stream) { + if (!file->stream || flock(fileno(file->stream), LOCK_EX)) { perror(filename); partitioned_file_close(file); return NULL; @@ -78,7 +79,7 @@ partitioned_file_t *partitioned_file_create_flat(const char *filename, } file->stream = fopen(filename, "wb"); - if (!file->stream) { + if (!file->stream || flock(fileno(file->stream), LOCK_EX)) { perror(filename); free(file); return NULL; @@ -268,6 +269,7 @@ void partitioned_file_close(partitioned_file_t *file) file->fmap = NULL; buffer_delete(&file->buffer); if (file->stream) { + flock(fileno(file->stream), LOCK_UN); fclose(file->stream); file->stream = NULL; } |