diff options
Diffstat (limited to 'inotail.c')
| -rw-r--r-- | inotail.c | 17 |
1 files changed, 10 insertions, 7 deletions
@@ -49,7 +49,7 @@ static char verbose = 0; /* Tailing relative to begin or end of file */ -static char relative = R_END; +static char from_begin = 0; /* Command line options */ static const struct option long_opts[] = { @@ -103,7 +103,7 @@ static off_t lines_to_offset(struct file_struct *f, unsigned int n_lines) memset(&buf, 0, sizeof(buf)); - if (relative == R_END) + if (!from_begin) n_lines += 1; /* We also count the last \n */ while (offset > 0 && n_lines > 0) { @@ -139,11 +139,9 @@ static off_t lines_to_offset(struct file_struct *f, unsigned int n_lines) return offset; } -static off_t bytes_to_offset(struct file_struct *f, unsigned int n_bytes) +static inline off_t bytes_to_offset(struct file_struct *f, unsigned int n_bytes) { - int ret = f->st_size - n_bytes; - - return (ret < 0 ? 0 : ret); + return from_begin ? ((off_t) n_bytes - 1) : (f->st_size - n_bytes); } static int tail_pipe(struct file_struct *f) @@ -343,7 +341,7 @@ int main(int argc, char **argv) if (c == 'c') mode = M_BYTES; if (*optarg == '+') - relative = R_BEGIN; + from_begin = 1; else if (*optarg == '-') optarg++; n_units = strtoul(optarg, NULL, 0); @@ -387,6 +385,11 @@ int main(int argc, char **argv) } files = malloc(n_files * sizeof(struct file_struct)); + if (!files) { + fprintf(stderr, "Error: Not enough memory (%s)\n", strerror(errno)); + exit(EXIT_FAILURE); + } + for (i = 0; i < n_files; i++) { files[i].name = filenames[i]; setup_file(&files[i]); |