diff options
Diffstat (limited to 'mysys/my_read.c')
| -rw-r--r-- | mysys/my_read.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/mysys/my_read.c b/mysys/my_read.c index 0c302d5b227..75f9dd64f1d 100644 --- a/mysys/my_read.c +++ b/mysys/my_read.c @@ -15,9 +15,9 @@ #include "mysys_priv.h" #include "mysys_err.h" +#include <my_base.h> #include <errno.h> - /* Read a chunk of bytes from a file with retry's if needed @@ -37,16 +37,25 @@ size_t my_read(File Filedes, uchar *Buffer, size_t Count, myf MyFlags) { size_t readbytes, save_count; DBUG_ENTER("my_read"); - DBUG_PRINT("my",("Fd: %d Buffer: 0x%lx Count: %lu MyFlags: %d", - Filedes, (long) Buffer, (ulong) Count, MyFlags)); + DBUG_PRINT("my",("fd: %d Buffer: %p Count: %lu MyFlags: %d", + Filedes, Buffer, (ulong) Count, MyFlags)); save_count= Count; for (;;) { - errno= 0; /* Linux doesn't reset this */ - if ((readbytes= read(Filedes, Buffer, (uint) Count)) != Count) + errno= 0; /* Linux, Windows don't reset this on EOF/success */ +#ifdef _WIN32 + readbytes= my_win_read(Filedes, Buffer, Count); +#else + readbytes= read(Filedes, Buffer, Count); +#endif + + if (readbytes != Count) { - my_errno= errno ? errno : -1; + my_errno= errno; + if (errno == 0 || (readbytes != (size_t) -1 && + (MyFlags & (MY_NABP | MY_FNABP)))) + my_errno= HA_ERR_FILE_TOO_SHORT; DBUG_PRINT("warning",("Read only %d bytes off %lu from %d, errno: %d", (int) readbytes, (ulong) Count, Filedes, my_errno)); |