QubesOS/qubes-linux-utils
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qrexec-lib: add glibc version test check for having syncfs

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Compile fix for wheezy, which has too old glibc (2.13).

(cherry picked from commit c2c36d9c09)
This commit is contained in:
Marek Marczykowski-Górecki 2015-12-11 21:42:31 +01:00
parent 6ce2b79438
commit 8e6bbc7187
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1 changed files with 8 additions and 0 deletions
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8
qrexec-lib/unpack.c
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@ -33,6 +33,10 @@ void send_status_and_crc(int code, const char *last_filename);
#define O_TMPFILE_MASK (__O_TMPFILE | O_DIRECTORY | O_CREAT)
#endif
#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 14)
#define HAVE_SYNCFS
#endif
void do_exit(int code, const char *last_filename)
{
close(0);
@ -208,8 +212,10 @@ void process_one_file(struct file_header *untrusted_hdr)
int do_unpack(void)
{
struct file_header untrusted_hdr;
#ifdef HAVE_SYNCFS
int cwd_fd;
int saved_errno;
#endif
total_bytes = total_files = 0;
/* initialize checksum */
@ -226,10 +232,12 @@ int do_unpack(void)
process_one_file(&untrusted_hdr);
}
#ifdef HAVE_SYNCFS
saved_errno = errno;
cwd_fd = open(".", O_RDONLY);
if (cwd_fd >= 0 && syncfs(cwd_fd) == 0 && close(cwd_fd) == 0)
errno = saved_errno;
#endif
send_status_and_crc(errno, untrusted_namebuf);
return errno;