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| Title: | DIGITAL UNIX (FORMERLY KNOWN AS DEC OSF/1) |
| Notice: | Welcome to the Digital UNIX Conference |
| Moderator: | SMURF::DENHAM |
|
| Created: | Thu Mar 16 1995 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 10068 |
| Total number of notes: | 35879 |
9243.0. "Curiosity question: can app programmer use st_flags in stat.h?" by PEACHS::DALEY (Maybe I should drink more coffee...or less!) Thu Mar 20 1997 17:13
Hi,
Customer has a question: in stat.h, the stat struct, the field
uint_t st_flags; /* user defined flags for file */
sounds like something you can put "user defined" flags in, to be retrieved
for your own purposes later.
I can't find anything to support this idea, or information about how one
would store a value there. It always seems to come back (from stat or fstat)
as 0.
I tried using fcntl F_SETFL to set it, but fstat still got back a 0 for st_flags.
The only place I've ever seen st_flags used is in vn_stat, where it's set to
vap->va_flags.
Is this a free area for app programmers, or something else altogether? A pointer
to information is greatly appreciated.
Regards,
John
| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 9243.1 | | SMURF::SCOTT | | Thu Mar 20 1997 17:52 | 11 |
| john,
The st_flags field in the stat structure maps to the on-disk i_flags
field in the (UFS) inode. These flags are reserved for kernel use.
A value of 1 in this field indicates a fast symbolic link. Other
bits have meanings as well (see /usr/include/ufs/dinode.h).
A user can read, but not write (directly), these bits.
larry
|