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Fix return value on aio_read/write success 

Internally track resultant byte counts as ssize_t, but return 0 as int
for success indication, per POSIX.
This commit is contained in:
Mark Geisert 2018-08-06 22:54:06 -07:00 committed by Corinna Vinschen
parent f16b198c3b
commit b1952c03a8
1 changed files with 4 additions and 4 deletions
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8
winsup/cygwin/aio.cc
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@ -265,7 +265,7 @@ aiowaiter (void *unused)
} }
} }
static int static ssize_t
asyncread (struct aiocb *aio) asyncread (struct aiocb *aio)
{ /* Try to initiate an asynchronous read, either from app or worker thread */ { /* Try to initiate an asynchronous read, either from app or worker thread */
ssize_t res = 0; ssize_t res = 0;
@ -296,7 +296,7 @@ asyncread (struct aiocb *aio)
return res; return res;
} }
static int static ssize_t
asyncwrite (struct aiocb *aio) asyncwrite (struct aiocb *aio)
{ /* Try to initiate an asynchronous write, either from app or worker thread */ { /* Try to initiate an asynchronous write, either from app or worker thread */
ssize_t res = 0; ssize_t res = 0;
@ -712,7 +712,7 @@ aio_read (struct aiocb *aio)
; /* I think this is not possible */ ; /* I think this is not possible */
} }
return res; return res < 0 ? (int) res : 0; /* return 0 on success */
} }
ssize_t ssize_t
@ -902,7 +902,7 @@ aio_write (struct aiocb *aio)
; /* I think this is not possible */ ; /* I think this is not possible */
} }
return res; return res < 0 ? (int) res : 0; /* return 0 on success */
} }
int int