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-rw-r--r--src/H5FDsec2.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/src/H5FDsec2.c b/src/H5FDsec2.c
index 0054a86..a393490 100644
--- a/src/H5FDsec2.c
+++ b/src/H5FDsec2.c
@@ -669,6 +669,7 @@ H5FD_sec2_read(H5FD_t *_file, H5FD_mem_t H5_ATTR_UNUSED type, hid_t H5_ATTR_UNUS
haddr_t addr, size_t size, void *buf /*out*/)
{
H5FD_sec2_t *file = (H5FD_sec2_t *)_file;
+ HDoff_t offset = (HDoff_t)addr;
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT
@@ -687,7 +688,7 @@ H5FD_sec2_read(H5FD_t *_file, H5FD_mem_t H5_ATTR_UNUSED type, hid_t H5_ATTR_UNUS
if(addr != file->pos || OP_READ != file->op) {
if(HDlseek(file->fd, (HDoff_t)addr, SEEK_SET) < 0)
HSYS_GOTO_ERROR(H5E_IO, H5E_SEEKERROR, FAIL, "unable to seek to proper position")
- } /* end if */
+ }
#endif /* H5_HAVE_PREADWRITE */
/* Read data, being careful of interrupted system calls, partial results,
@@ -697,7 +698,6 @@ H5FD_sec2_read(H5FD_t *_file, H5FD_mem_t H5_ATTR_UNUSED type, hid_t H5_ATTR_UNUS
h5_posix_io_t bytes_in = 0; /* # of bytes to read */
h5_posix_io_ret_t bytes_read = -1; /* # of bytes actually read */
- HDoff_t offset = (HDoff_t)addr;
/* Trying to read more bytes than the return type can handle is
* undefined behavior in POSIX.
@@ -710,7 +710,8 @@ H5FD_sec2_read(H5FD_t *_file, H5FD_mem_t H5_ATTR_UNUSED type, hid_t H5_ATTR_UNUS
do {
#ifdef H5_HAVE_PREADWRITE
bytes_read = HDpread(file->fd, buf, bytes_in, offset);
- offset += bytes_read;
+ if(bytes_read > 0)
+ offset += bytes_read;
#else
bytes_read = HDread(file->fd, buf, bytes_in);
#endif /* H5_HAVE_PREADWRITE */
@@ -773,6 +774,7 @@ H5FD_sec2_write(H5FD_t *_file, H5FD_mem_t H5_ATTR_UNUSED type, hid_t H5_ATTR_UNU
haddr_t addr, size_t size, const void *buf)
{
H5FD_sec2_t *file = (H5FD_sec2_t *)_file;
+ HDoff_t offset = (HDoff_t)addr;
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT
@@ -791,7 +793,7 @@ H5FD_sec2_write(H5FD_t *_file, H5FD_mem_t H5_ATTR_UNUSED type, hid_t H5_ATTR_UNU
if(addr != file->pos || OP_WRITE != file->op) {
if(HDlseek(file->fd, (HDoff_t)addr, SEEK_SET) < 0)
HSYS_GOTO_ERROR(H5E_IO, H5E_SEEKERROR, FAIL, "unable to seek to proper position")
- } /* end if */
+ }
#endif /* H5_HAVE_PREADWRITE */
/* Write the data, being careful of interrupted system calls and partial
@@ -801,7 +803,6 @@ H5FD_sec2_write(H5FD_t *_file, H5FD_mem_t H5_ATTR_UNUSED type, hid_t H5_ATTR_UNU
h5_posix_io_t bytes_in = 0; /* # of bytes to write */
h5_posix_io_ret_t bytes_wrote = -1; /* # of bytes written */
- HDoff_t offset = (HDoff_t)addr;
/* Trying to write more bytes than the return type can handle is
* undefined behavior in POSIX.
@@ -814,7 +815,8 @@ H5FD_sec2_write(H5FD_t *_file, H5FD_mem_t H5_ATTR_UNUSED type, hid_t H5_ATTR_UNU
do {
#ifdef H5_HAVE_PREADWRITE
bytes_wrote = HDpwrite(file->fd, buf, bytes_in, offset);
- offset += bytes_wrote;
+ if(bytes_wrote > 0)
+ offset += bytes_wrote;
#else
bytes_wrote = HDwrite(file->fd, buf, bytes_in);
#endif /* H5_HAVE_PREADWRITE */