diff options
Diffstat (limited to 'lib/libfile.c')
-rw-r--r-- | lib/libfile.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/lib/libfile.c b/lib/libfile.c index 4ab8db11ad..40b1d8bb27 100644 --- a/lib/libfile.c +++ b/lib/libfile.c @@ -100,6 +100,29 @@ int read_full(int fd, void *buf, size_t size) } EXPORT_SYMBOL(read_full); +int copy_fd(int in, int out) +{ + int bs = 4096, ret; + void *buf = malloc(bs); + + if (!buf) + return -ENOMEM; + + while (1) { + ret = read(in, buf, bs); + if (ret <= 0) + break; + + ret = write_full(out, buf, ret); + if (ret < 0) + break; + } + + free(buf); + + return ret; +} + /* * read_file_line - read a line from a file * |