SEI CERT C Coding Standard

Space shortcuts

Page tree

Versions Compared

Old Version 43

changes.mady.by.user Robert Seacord (Manager)

Saved on

compared with

New Version 44

changes.mady.by.user Alex Volkovitsky

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

Type

Note on effect

another regular file

The fstat() verification fails

FIFO

Either open() will return -1 and set errno to ENXIO or the open() will succeed and the fstat() verification will fail

symbolic link

open() will return -1 if O_NOFOLLOW is available, otherwise the fstat() verification will fail

special device

Usually the fstat() verification will fail on st_mode. This could still be a problem if the device is one for which just opening (or closing) it causes something to happen. If st_mode compares equal, then the device is one which, after opening, appears to be a regular file. It would then fail the fstat() verification on st_dev and st_ino (unless it happens to be the same file, as could happen with /dev/fd/* on Solaris, but this would not be a problem)

...