mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-16 16:36:58 +07:00
182846a00f
MAX_NR_CONSOLES and MAX_NR_USER_CONSOLES are both 63 since they were
introduced in 1.1.54. And since vc_allocate does:
if (currcons >= MAX_NR_CONSOLES)
return -ENXIO;
if (!vc_cons[currcons].d) {
if (currcons >= MAX_NR_USER_CONSOLES && !capable(CAP_SYS_RESOURCE))
return -EPERM;
}
the second check is pointless. Remove both the check and the macro
MAX_NR_USER_CONSOLES.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Reported-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
87 lines
2.9 KiB
C
87 lines
2.9 KiB
C
#ifndef _UAPI_LINUX_VT_H
|
|
#define _UAPI_LINUX_VT_H
|
|
|
|
|
|
/*
|
|
* These constants are also useful for user-level apps (e.g., VC
|
|
* resizing).
|
|
*/
|
|
#define MIN_NR_CONSOLES 1 /* must be at least 1 */
|
|
#define MAX_NR_CONSOLES 63 /* serial lines start at 64 */
|
|
/* Note: the ioctl VT_GETSTATE does not work for
|
|
consoles 16 and higher (since it returns a short) */
|
|
|
|
/* 0x56 is 'V', to avoid collision with termios and kd */
|
|
|
|
#define VT_OPENQRY 0x5600 /* find available vt */
|
|
|
|
struct vt_mode {
|
|
char mode; /* vt mode */
|
|
char waitv; /* if set, hang on writes if not active */
|
|
short relsig; /* signal to raise on release req */
|
|
short acqsig; /* signal to raise on acquisition */
|
|
short frsig; /* unused (set to 0) */
|
|
};
|
|
#define VT_GETMODE 0x5601 /* get mode of active vt */
|
|
#define VT_SETMODE 0x5602 /* set mode of active vt */
|
|
#define VT_AUTO 0x00 /* auto vt switching */
|
|
#define VT_PROCESS 0x01 /* process controls switching */
|
|
#define VT_ACKACQ 0x02 /* acknowledge switch */
|
|
|
|
struct vt_stat {
|
|
unsigned short v_active; /* active vt */
|
|
unsigned short v_signal; /* signal to send */
|
|
unsigned short v_state; /* vt bitmask */
|
|
};
|
|
#define VT_GETSTATE 0x5603 /* get global vt state info */
|
|
#define VT_SENDSIG 0x5604 /* signal to send to bitmask of vts */
|
|
|
|
#define VT_RELDISP 0x5605 /* release display */
|
|
|
|
#define VT_ACTIVATE 0x5606 /* make vt active */
|
|
#define VT_WAITACTIVE 0x5607 /* wait for vt active */
|
|
#define VT_DISALLOCATE 0x5608 /* free memory associated to vt */
|
|
|
|
struct vt_sizes {
|
|
unsigned short v_rows; /* number of rows */
|
|
unsigned short v_cols; /* number of columns */
|
|
unsigned short v_scrollsize; /* number of lines of scrollback */
|
|
};
|
|
#define VT_RESIZE 0x5609 /* set kernel's idea of screensize */
|
|
|
|
struct vt_consize {
|
|
unsigned short v_rows; /* number of rows */
|
|
unsigned short v_cols; /* number of columns */
|
|
unsigned short v_vlin; /* number of pixel rows on screen */
|
|
unsigned short v_clin; /* number of pixel rows per character */
|
|
unsigned short v_vcol; /* number of pixel columns on screen */
|
|
unsigned short v_ccol; /* number of pixel columns per character */
|
|
};
|
|
#define VT_RESIZEX 0x560A /* set kernel's idea of screensize + more */
|
|
#define VT_LOCKSWITCH 0x560B /* disallow vt switching */
|
|
#define VT_UNLOCKSWITCH 0x560C /* allow vt switching */
|
|
#define VT_GETHIFONTMASK 0x560D /* return hi font mask */
|
|
|
|
struct vt_event {
|
|
unsigned int event;
|
|
#define VT_EVENT_SWITCH 0x0001 /* Console switch */
|
|
#define VT_EVENT_BLANK 0x0002 /* Screen blank */
|
|
#define VT_EVENT_UNBLANK 0x0004 /* Screen unblank */
|
|
#define VT_EVENT_RESIZE 0x0008 /* Resize display */
|
|
#define VT_MAX_EVENT 0x000F
|
|
unsigned int oldev; /* Old console */
|
|
unsigned int newev; /* New console (if changing) */
|
|
unsigned int pad[4]; /* Padding for expansion */
|
|
};
|
|
|
|
#define VT_WAITEVENT 0x560E /* Wait for an event */
|
|
|
|
struct vt_setactivate {
|
|
unsigned int console;
|
|
struct vt_mode mode;
|
|
};
|
|
|
|
#define VT_SETACTIVATE 0x560F /* Activate and set the mode of a console */
|
|
|
|
#endif /* _UAPI_LINUX_VT_H */
|