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libstdc++: Use close-on-exec for file descriptors in filesystem::copy_file

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libstdc++-v3/ChangeLog:

	* src/filesystem/ops-common.h (do_copy_file) [O_CLOEXEC]: Set
	close-on-exec flag on file descriptors.

(cherry picked from commit 7e8e071c4b64f1b6ea5ddf528724fc793a0f0e36)
This commit is contained in:
Jonathan Wakely
2023-06-05 17:45:37 +01:00
parent 32f2b0f328
commit bae27ba9de
1 changed files with 7 additions and 6 deletions
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libstdc++-v3/src/filesystem/ops-common.h
+7 -6
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@@ -457,25 +457,26 @@ _GLIBCXX_BEGIN_NAMESPACE_FILESYSTEM
int fd;
};
int iflag = O_RDONLY;
int common_flags = 0;
#ifdef O_CLOEXEC
common_flags |= O_CLOEXEC;
#endif
#ifdef _GLIBCXX_FILESYSTEM_IS_WINDOWS
iflag |= O_BINARY;
common_flags |= O_BINARY;
#endif
const int iflag = O_RDONLY | common_flags;
CloseFD in = { posix::open(from, iflag) };
if (in.fd == -1)
{
ec.assign(errno, std::generic_category());
return false;
}
int oflag = O_WRONLY|O_CREAT;
int oflag = O_WRONLY | O_CREAT | common_flags;
if (options.overwrite || options.update)
oflag |= O_TRUNC;
else
oflag |= O_EXCL;
#ifdef _GLIBCXX_FILESYSTEM_IS_WINDOWS
oflag |= O_BINARY;
#endif
CloseFD out = { posix::open(to, oflag, S_IWUSR) };
if (out.fd == -1)
{