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New kernel call, SYS_PARAMCTL, that sets parameters of the caller

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and is therefore unprivileged. Used to set grant tables.
This commit is contained in:
Ben Gras
2006-06-23 15:07:41 +00:00
parent 8dfac43a75
commit 002922fa4c
10 changed files with 71 additions and 14 deletions
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17
include/minix/com.h
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@@ -286,11 +286,12 @@
# define SYS_IOPENABLE (KERNEL_CALL + 28) /* sys_enable_iop() */
# define SYS_VM_SETBUF (KERNEL_CALL + 29) /* sys_vm_setbuf() */
# define SYS_VM_MAP (KERNEL_CALL + 30) /* sys_vm_map() */
# define SYS_SAFECOPYFROM (KERNEL_CALL + 31) /* sys_safecopyfrom() */
# define SYS_SAFECOPYTO (KERNEL_CALL + 32) /* sys_safecopyto() */
# define SYS_SAFECOPYFROM (KERNEL_CALL + 31) /* sys_safecopyfrom() */
# define SYS_SAFECOPYTO (KERNEL_CALL + 32) /* sys_safecopyto() */
# define SYS_VSAFECOPY (KERNEL_CALL + 33) /* sys_vsafecopy() */
# define SYS_PARAMCTL (KERNEL_CALL + 34) /* sys_paramctl() */
#define NR_SYS_CALLS 34 /* number of system calls */
#define NR_SYS_CALLS 35 /* number of system calls */
/* Pseudo call for use in kernel/table.c. */
#define SYS_ALL_CALLS (NR_SYS_CALLS)
@@ -301,7 +302,9 @@
#define SYS_PRIV_ADD_MEM 3 /* Add memory range (struct mem_range)
*/
#define SYS_PRIV_ADD_IRQ 4 /* Add IRQ */
#define SYS_PRIV_SET_GRANTS 5 /* Set grant table */
/* Subfunctions for SYS_PARAMCTL */
#define SYS_PARAM_SET_GRANT 1 /* Set address and size of grant table */
/* Field names for SYS_MEMSET, SYS_SEGCTL. */
#define MEM_PTR m2_p1 /* base */
@@ -444,6 +447,12 @@
#define CTL_ADDRESS m2_l1 /* address at traced process' space */
#define CTL_DATA m2_l2 /* data field for tracing */
/* Field names for SYS_PARAMCTL */
#define PCTL_REQ m2_i1 /* request code */
#define PCTL_INT1 m2_i2 /* int param 1 */
#define PCTL_INT2 m2_i3 /* int param 2 */
#define PCTL_ADDR1 m2_p1 /* address param 1 */
/* Field names for SYS_KILL, SYS_SIGCTL */
#define SIG_REQUEST m2_l2 /* PM signal control request */
#define S_GETSIG 0 /* get pending kernel signal */

1
include/minix/syslib.h
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@@ -37,6 +37,7 @@ _PROTOTYPE( int sys_exit, (endpoint_t proc));
_PROTOTYPE( int sys_trace, (int req, endpoint_t proc, long addr, long *data_p));
_PROTOTYPE( int sys_privctl, (endpoint_t proc, int req, int i, void *p));
_PROTOTYPE( int sys_paramctl, (int req, int int1, void *addr1, int int2));
_PROTOTYPE( int sys_nice, (endpoint_t proc, int priority));
_PROTOTYPE( int sys_int86, (struct reg86u *reg86p));