diff options
Diffstat (limited to 'source3/lib/sendfile.c')
| -rw-r--r-- | source3/lib/sendfile.c | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/source3/lib/sendfile.c b/source3/lib/sendfile.c index 4613cfb864..8bcb9dbd02 100644 --- a/source3/lib/sendfile.c +++ b/source3/lib/sendfile.c @@ -76,7 +76,13 @@ ssize_t sys_sendfile(int tofd, int fromfd, const DATA_BLOB *header, SMB_OFF_T of #elif defined(LINUX_BROKEN_SENDFILE_API) -#include <sys/sendfile.h> +/* + * We must use explicit 32 bit types here. This code path means Linux + * won't do proper 64-bit sendfile. JRA. + */ + +extern int32 sendfile (int out_fd, int in_fd, int32 *offset, uint32 count); + #ifndef MSG_MORE #define MSG_MORE 0x8000 @@ -87,11 +93,13 @@ ssize_t sys_sendfile(int tofd, int fromfd, const DATA_BLOB *header, SMB_OFF_T of size_t total=0; ssize_t ret; ssize_t hdr_len = 0; + uint32 small_total = 0; + int32 small_offset; /* * Fix for broken Linux 2.4 systems with no working sendfile64(). * If the offset+count > 2 GB then pretend we don't have the - * system call sendfile at all. The upper later catches this + * system call sendfile at all. The upper layer catches this * and uses a normal read. JRA. */ @@ -115,17 +123,19 @@ ssize_t sys_sendfile(int tofd, int fromfd, const DATA_BLOB *header, SMB_OFF_T of } } - total = count; - while (total) { - ssize_t nwritten; + small_total = (uint32)count; + small_offset = (int32)offset; + + while (small_total) { + int32 nwritten; do { - nwritten = sendfile(tofd, fromfd, &offset, total); + nwritten = sendfile(tofd, fromfd, &small_offset, small_total); } while (nwritten == -1 && errno == EINTR); if (nwritten == -1) return -1; if (nwritten == 0) return -1; /* I think we're at EOF here... */ - total -= nwritten; + small_total -= nwritten; } return count + hdr_len; } |