| @node fstat |
| @section @code{fstat} |
| @findex fstat |
| |
| POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/fstat.html} |
| |
| Gnulib module: fstat |
| |
| Portability problems fixed by Gnulib: |
| @itemize |
| @item |
| This function crashes when invoked with invalid arguments on some platforms: |
| MSVC 14. |
| @item |
| On platforms where @code{off_t} is a 32-bit type, @code{fstat} may not correctly |
| report the size of files or block devices larger than 2 GB. |
| (Cf. @code{AC_SYS_LARGEFILE}.) |
| @item |
| On Linux/x86 and Linux/x86_64, applications compiled in 32-bit mode cannot |
| access files that happen to have a 64-bit inode number. This can occur with |
| file systems such as XFS (typically on large disks) and NFS. |
| (Cf. @code{AC_SYS_LARGEFILE}.) |
| @item |
| On Solaris 11.4, when this function yields a timestamp with a |
| nonpositive @code{tv_sec} value, @code{tv_nsec} might be in the range |
| @minus{}1000000000..@minus{}1, representing a negative nanoseconds |
| offset from @code{tv_sec}. |
| @item |
| The @code{st_atime}, @code{st_ctime}, @code{st_mtime} fields are affected by |
| the current time zone and by the DST flag of the current time zone on some |
| platforms: |
| mingw, MSVC 14 (when the environment variable @code{TZ} is set). |
| @end itemize |
| |
| Portability problems not fixed by Gnulib: |
| @itemize |
| @item |
| @xref{sys/stat.h}, for general portability problems with @code{struct stat}. |
| @item |
| On Cygwin, @code{fstat} applied to the file descriptors 0 and 1, returns |
| different @code{st_ino} values, even if standard input and standard output |
| are not redirected and refer to the same terminal. |
| @end itemize |