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lib/deltas: Use pread() instead of lseek()+read() 

That's why the syscall was invented, so let's use it. Just noticed while reading
the code while working on another patch.

Closes: #1270
Approved by: jlebon
This commit is contained in:
Colin Walters 2017-10-13 20:51:39 -04:00 committed by Atomic Bot
parent bb05b187b6
commit 93457071cb
1 changed files with 1 additions and 3 deletions
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4
src/libostree/ostree-repo-static-delta-processing.c
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@ -719,15 +719,13 @@ dispatch_write (OstreeRepo *repo,
{
if (state->read_source_fd != -1)
{
if (lseek (state->read_source_fd, content_offset, SEEK_SET) == -1)
return glnx_throw_errno_prefix (error, "lseek");
while (content_size > 0)
{
char buf[4096];
gssize bytes_read;
do
bytes_read = read (state->read_source_fd, buf, MIN(sizeof(buf), content_size));
bytes_read = pread (state->read_source_fd, buf, MIN(sizeof(buf), content_size), content_offset);
while (G_UNLIKELY (bytes_read == -1 && errno == EINTR));
if (bytes_read == -1)
return glnx_throw_errno_prefix (error, "read");