Messages in this thread Patch in this message | | | Subject | Re: Problem with lp.h | Date | Sun, 16 May 1999 13:08:46 +0100 | From | Philip Blundell <> |
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>The file include/linux/lp.h seems to have code in it, related to wait >queues, that should be available only to the kernel, but is not hidden >from user-space programs.
Good point. Actually, there is a lot of other cruft there that should probably be concealed from user space. I guess something like:
--- lp.h~ Sun May 16 13:07:07 1999 +++ lp.h Sun May 16 13:07:47 1999 @@ -7,12 +7,6 @@ * Interrupt support added 1993 Nigel Gamble */ -/* Magic numbers for defining port-device mappings */ -#define LP_PARPORT_UNSPEC -4 -#define LP_PARPORT_AUTO -3 -#define LP_PARPORT_OFF -2 -#define LP_PARPORT_NONE -1 - /* * Per POSIX guidelines, this module reserves the LP and lp prefixes * These are the lp_table[minor].flags flags... @@ -87,6 +81,14 @@ #define LP_TIMEOUT_INTERRUPT (60 * HZ) #define LP_TIMEOUT_POLLED (10 * HZ) +#ifdef __KERNEL__ + +/* Magic numbers for defining port-device mappings */ +#define LP_PARPORT_UNSPEC -4 +#define LP_PARPORT_AUTO -3 +#define LP_PARPORT_OFF -2 +#define LP_PARPORT_NONE -1 + #define LP_F(minor) lp_table[(minor)].flags /* flags for busy, etc. */ #define LP_CHAR(minor) lp_table[(minor)].chars /* busy timeout */ #define LP_TIME(minor) lp_table[(minor)].time /* wait time */ @@ -180,5 +182,7 @@ */ extern int lp_init(void); + +#endif #endif p.
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