[fpc-devel] unix platform maintainers :setuid, setsgid

Olivier Coursière olivier.coursiere at laposte.net
Sat Aug 27 17:39:11 CEST 2011


Le 27/08/2011 16:33, Marco van de Voort a écrit :
> Not all permission bits have constants predeclared. Michael and I checked
> and Linux/FreeBSD/Darwin all have the upper bits declared like this:
> #define S_ISUID         0004000         /* [XSI] set user id on execution */
> #define S_ISGID         0002000         /* [XSI] set group id on execution
> #define S_ISVTX         0001000         /* [XSI] directory restrcted delete
> #define S_ISTXT         S_ISVTX         /* sticky bit: not supported */
> Hereby a request to other "unix" port maintainers to check their headers
> to see if your OS implements these constants. (Solaris and Haiku mainly I
> guess, though the sleeping QNX and netwarelibc ports too I assume)
> Note that the latter two are both the sticky bit, the TXT alias is the
> original BSD symbol for it, the VTX declaration the current (XSI/POSIX)
> name. Most manpages warn that the sticky bit is hardly implemented, so it is
> probably less important than the other two.
Under Haiku, those symbols are defined like this in sys/stat.h :

#define S_IUMSK 07777       /* user settable bits */

#define S_ISUID 04000       /* set user id on execution */
#define S_ISGID 02000       /* set group id on execution */

#define S_ISVTX 01000       /* save swapped text even after use (sticky 
bit) */

S_ISTXT is not declared and i have included S_IUMSK as i thought it might be related (but i have no knowledge in that area).


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