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Avoid wrong value from file-attributes on Linux kernel before 3.6

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* dired.c (file_attributes): Handle unsupported fstat on O_PATH
descriptors.  (bug#29070)
This commit is contained in:
Andreas Schwab 2017-11-01 15:26:21 +01:00
parent 70621e2571
commit 8453423c7c
1 changed files with 8 additions and 1 deletions
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9
src/dired.c
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@ -953,7 +953,14 @@ file_attributes (int fd, char const *name,
{
record_unwind_protect_int (close_file_unwind, namefd);
if (fstat (namefd, &s) != 0)
err = errno;
{
err = errno;
/* The Linux kernel before version 3.6 does not support
fstat on O_PATH file descriptors. Handle this error like
missing support for O_PATH. */
if (err == EBADF)
err = EINVAL;
}
else
{
err = 0;