Re: [MiNT] [XaAES] shel_write

["Arnaud BERCEGEAY" <arnaud.bercegeay@free.fr>]

Hello,

> Something with is differing between XaAES and MagiC 6.
>
> XaAES have two shel_write extensions:
> #define SW_UID 	0x1000	/* Set user id of launched child */
> #define SW_GID	0x2000	/* Set group id of launched child */
>
> The problem is that MagiC since version 6 have also a new extension:
> #define SHW_XMDFLAGS	4096

Yes, and moreover, the SHELW structure differs because of these  
extensions. In gemlib, this is "solved" by using two differents name for  
the same thing: SHELW for XaAES and XSHW_COMMAND for magic 6.

I think we'll have to live with this incompatibility issue :(

Here are the definitions from gemlib (just updated on the subject):

typedef struct
{
	/** points to the filename formatted in the manner indicated
	 *  above
	 */
	char *newcmd;
	/** contains the maximum memory size available to the process
	 *  only used if the extended mode #SW_PSETLIMIT is set
	 */
	long psetlimit;
	/** contains the process priority of the process to launch
	 *  only used if the extended mode #SW_PRENICE is set
	 */
	long prenice;
	/** points to a character string containing the default directory
	 *  for the application begin launched.
	 *  only used if the extended mode #SW_DEFDIR is set
	 */
	char *defdir;
	/** points to a valid environment string for the process
	 *  only used if the extended mode #SW_ENVIRON is set
	 */
	char *env;
	/** New child's UID (user id)
	 *  only used if the extended mode #SW_UID is set
	 */
	short uid;
	/* New child's GID (group id)
	 * only used if the extended mode #SW_GID is set
	 */
	short gid;
} SHELW;

/** similar to ::SHELW, with MagiC 6 only specificity, and without  
XaAES/oAESis extensions */
typedef struct
{
	char	*command;	/**< see SHELW::newcmd */
	long	limit;		/**< see SHELW::psetlimit */
	long	nice;		/**< see SHELW::prenice */
	char	*defdir;	/**< see SHELW::defdir */
	char	*env;		/**< see SHELW::env */
	long	flags;		/**< since MagiC 6.  only used if the extended mode  
#SHW_XMDFLAGS is set*/
} XSHW_COMMAND;


Best regards,
Arnaud.