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-rw-r--r--inotail.c18
1 files changed, 12 insertions, 6 deletions
diff --git a/inotail.c b/inotail.c
index 0c278e2..6f8be7c 100644
--- a/inotail.c
+++ b/inotail.c
@@ -198,12 +198,18 @@ static off_t lines_to_offset(struct file_struct *f, unsigned long n_lines)
static off_t bytes_to_offset(struct file_struct *f, unsigned long n_bytes)
{
- /* tail everything for 'inotail -c +0' or if n_bytes greater than the
- * total amount of chars in the file */
- if ((from_begin && n_bytes == 0) || ((off_t) n_bytes > f->st_size))
- return 0;
- else
- return (from_begin ? ((off_t) n_bytes - 1) : (f->st_size - (off_t) n_bytes));
+ off_t offset = 0;
+
+ /* tail everything for 'inotail -c +0' */
+ if (from_begin) {
+ if (n_bytes > 0)
+ offset = (off_t) n_bytes - 1;
+ } else {
+ if ((off_t) n_bytes < f->st_size)
+ offset = f->st_size - (off_t) n_bytes;
+ }
+
+ return offset;
}
static ssize_t tail_pipe(struct file_struct *f)