diff options
Diffstat (limited to 'erts/emulator/drivers')
| -rw-r--r-- | erts/emulator/drivers/unix/unix_efile.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/erts/emulator/drivers/unix/unix_efile.c b/erts/emulator/drivers/unix/unix_efile.c index 911ec63588..14b7a5cffa 100644 --- a/erts/emulator/drivers/unix/unix_efile.c +++ b/erts/emulator/drivers/unix/unix_efile.c @@ -1511,9 +1511,22 @@ efile_sendfile(Efile_error* errInfo, int in_fd, int out_fd, *nbytes = written; return check_error(retval, errInfo); #elif defined(__FreeBSD__) || defined(__DragonFly__) - off_t len = 0; - int retval = sendfile(in_fd, out_fd, *offset, *nbytes, NULL, &len, 0); - *nbytes = len; +#define SENDFILE_CHUNK_SIZE ((1 << (8*SIZEOF_SIZE_T)) - 1) + off_t len; + int retval; + do { + if (*nbytes > SENDFILE_CHUNK_SIZE) + retval = sendfile(in_fd, out_fd, *offset, SENDFILE_CHUNK_SIZE, + NULL, &len, 0); + else + retval = sendfile(in_fd, out_fd, *offset, *nbytes, NULL, &len, 0); + if (retval != -1 || errno == EAGAIN || errno == EINTR) { + *offset += len; + *nbytes -= len; + written += len; + } + } while(len == SENDFILE_CHUNK_SIZE); + *nbytes = written; return check_error(retval, errInfo); #endif } |