Message type for SYS_GETINFO and SYS_GETWHOAMI

Change-Id: I9cea3f65b29e30555c8b47865e12c7d19a74a3c3
This commit is contained in:
Lionel Sambuc 2014-05-22 10:46:02 +02:00
parent f1dff35292
commit dcb7493a05
5 changed files with 71 additions and 50 deletions

View file

@ -313,7 +313,6 @@
#define CP_FLAG_TRY 0x01 /* do not transparently map */
/* Field names for SYS_GETINFO. */
#define I_REQUEST m7_i3 /* what info to get */
# define GET_KINFO 0 /* get kernel information structure */
# define GET_IMAGE 1 /* get system image table */
# define GET_PROCTAB 2 /* get kernel process table */
@ -338,16 +337,6 @@
# define GET_CPUINFO 23 /* get information about cpus */
# define GET_REGS 24 /* get general process registers */
# define GET_RUSAGE 25 /* get resource usage */
#define I_ENDPT m7_i4 /* calling process (may only be SELF) */
#define I_VAL_PTR m7_p1 /* virtual address at caller */
#define I_VAL_LEN m7_i1 /* max length of value */
#define I_VAL_PTR2 m7_p2 /* second virtual address */
#define I_VAL_LEN2_E m7_i2 /* second length, or proc nr */
/* GET_WHOAMI fields. */
#define GIWHO_EP m3_i1
#define GIWHO_NAME m3_ca1
#define GIWHO_PRIVFLAGS m3_i2
/* Field names for SYS_TIMES. */
#define T_ENDPT m4_l1 /* process to request time info for */

View file

@ -719,6 +719,26 @@ typedef struct {
} mess_lsys_krn_sys_copy;
_ASSERT_MSG_SIZE(mess_lsys_krn_sys_copy);
typedef struct {
int request;
endpoint_t endpt;
vir_bytes val_ptr;
int val_len;
vir_bytes val_ptr2;
int val_len2_e;
uint8_t padding[32];
} mess_lsys_krn_sys_getinfo;
_ASSERT_MSG_SIZE(mess_lsys_krn_sys_getinfo);
typedef struct {
endpoint_t endpt;
int privflags;
char name[48];
} mess_krn_lsys_sys_getwhoami;
_ASSERT_MSG_SIZE(mess_krn_lsys_sys_getwhoami);
typedef struct {
endpoint_t endpt;
@ -1468,6 +1488,7 @@ typedef struct {
mess_sigcalls m_sigcalls;
mess_krn_lsys_schedule m_krn_lsys_schedule;
mess_krn_lsys_sys_getwhoami m_krn_lsys_sys_getwhoami;
mess_krn_lsys_sys_irqctl m_krn_lsys_sys_irqctl;
mess_krn_lsys_sys_umap m_krn_lsys_sys_umap;
mess_krn_lsys_sys_vumap m_krn_lsys_sys_vumap;
@ -1549,6 +1570,7 @@ typedef struct {
mess_lsys_krn_schedule m_lsys_krn_schedule;
mess_lsys_krn_sys_abort m_lsys_krn_sys_abort;
mess_lsys_krn_sys_copy m_lsys_krn_sys_copy;
mess_lsys_krn_sys_getinfo m_lsys_krn_sys_getinfo;
mess_lsys_krn_sys_iopenable m_lsys_krn_sys_iopenable;
mess_lsys_krn_sys_irqctl m_lsys_krn_sys_irqctl;
mess_lsys_krn_sys_memset m_lsys_krn_sys_memset;

View file

@ -2,11 +2,17 @@
* m_type: SYS_GETINFO
*
* The parameters for this kernel call are:
* m1_i3: I_REQUEST (what info to get)
* m1_p1: I_VAL_PTR (where to put it)
* m1_i1: I_VAL_LEN (maximum length expected, optional)
* m1_p2: I_VAL_PTR2 (second, optional pointer)
* m1_i2: I_VAL_LEN2_E (second length or process nr)
* m_lsys_krn_sys_getinfo.request (what info to get)
* m_lsys_krn_sys_getinfo.val_ptr (where to put it)
* m_lsys_krn_sys_getinfo.val_len (maximum length expected, optional)
* m_lsys_krn_sys_getinfo.val_ptr2 (second, optional pointer)
* m_lsys_krn_sys_getinfo.val_len2_e (second length or process nr)
*
* Upon return of the GETWHOAMI request the following parameters are used:
* m_krn_lsys_sys_getwhoami.endpt (the caller endpoint)
* m_krn_lsys_sys_getwhoami.privflags (the caller priviledes)
* m_krn_lsys_sys_getwhoami.name (the caller process name)
*
*/
#include <string.h>
@ -50,7 +56,7 @@ int do_getinfo(struct proc * caller, message * m_ptr)
struct rusage r_usage;
/* Set source address and length based on request type. */
switch (m_ptr->I_REQUEST) {
switch (m_ptr->m_lsys_krn_sys_getinfo.request) {
case GET_MACHINE: {
length = sizeof(struct machine);
src_vir = (vir_bytes) &machine;
@ -98,24 +104,24 @@ int do_getinfo(struct proc * caller, message * m_ptr)
break;
}
case GET_PROC: {
nr_e = (m_ptr->I_VAL_LEN2_E == SELF) ?
caller->p_endpoint : m_ptr->I_VAL_LEN2_E;
nr_e = (m_ptr->m_lsys_krn_sys_getinfo.val_len2_e == SELF) ?
caller->p_endpoint : m_ptr->m_lsys_krn_sys_getinfo.val_len2_e;
if(!isokendpt(nr_e, &nr)) return EINVAL; /* validate request */
length = sizeof(struct proc);
src_vir = (vir_bytes) proc_addr(nr);
break;
}
case GET_PRIV: {
nr_e = (m_ptr->I_VAL_LEN2_E == SELF) ?
caller->p_endpoint : m_ptr->I_VAL_LEN2_E;
nr_e = (m_ptr->m_lsys_krn_sys_getinfo.val_len2_e == SELF) ?
caller->p_endpoint : m_ptr->m_lsys_krn_sys_getinfo.val_len2_e;
if(!isokendpt(nr_e, &nr)) return EINVAL; /* validate request */
length = sizeof(struct priv);
src_vir = (vir_bytes) priv_addr(nr_to_id(nr));
break;
}
case GET_REGS: {
nr_e = (m_ptr->I_VAL_LEN2_E == SELF) ?
caller->p_endpoint : m_ptr->I_VAL_LEN2_E;
nr_e = (m_ptr->m_lsys_krn_sys_getinfo.val_len2_e == SELF) ?
caller->p_endpoint : m_ptr->m_lsys_krn_sys_getinfo.val_len2_e;
if(!isokendpt(nr_e, &nr)) return EINVAL; /* validate request */
p = proc_addr(nr);
length = sizeof(p->p_reg);
@ -124,12 +130,12 @@ int do_getinfo(struct proc * caller, message * m_ptr)
}
case GET_WHOAMI: {
int len;
/* GET_WHOAMI uses m3 and only uses the message contents for info. */
m_ptr->GIWHO_EP = caller->p_endpoint;
len = MIN(sizeof(m_ptr->GIWHO_NAME), sizeof(caller->p_name))-1;
strncpy(m_ptr->GIWHO_NAME, caller->p_name, len);
m_ptr->GIWHO_NAME[len] = '\0';
m_ptr->GIWHO_PRIVFLAGS = priv(caller)->s_flags;
m_ptr->m_krn_lsys_sys_getwhoami.endpt = caller->p_endpoint;
len = MIN(sizeof(m_ptr->m_krn_lsys_sys_getwhoami.name),
sizeof(caller->p_name))-1;
strncpy(m_ptr->m_krn_lsys_sys_getwhoami.name, caller->p_name, len);
m_ptr->m_krn_lsys_sys_getwhoami.name[len] = '\0';
m_ptr->m_krn_lsys_sys_getwhoami.privflags = priv(caller)->s_flags;
return OK;
}
case GET_MONPARAMS: {
@ -151,7 +157,7 @@ int do_getinfo(struct proc * caller, message * m_ptr)
break;
}
case GET_RANDOMNESS_BIN: {
int bin = m_ptr->I_VAL_LEN2_E;
int bin = m_ptr->m_lsys_krn_sys_getinfo.val_len2_e;
if(bin < 0 || bin >= RANDOM_SOURCES) {
printf("SYSTEM: GET_RANDOMNESS_BIN: %d out of range\n", bin);
@ -185,8 +191,8 @@ int do_getinfo(struct proc * caller, message * m_ptr)
struct proc *target = NULL;
int target_slot = 0;
u64_t usec;
nr_e = (m_ptr->I_VAL_LEN2_E == SELF) ?
caller->p_endpoint : m_ptr->I_VAL_LEN2_E;
nr_e = (m_ptr->m_lsys_krn_sys_getinfo.val_len2_e == SELF) ?
caller->p_endpoint : m_ptr->m_lsys_krn_sys_getinfo.val_len2_e;
if (!isokendpt(nr_e, &target_slot))
return EINVAL;
@ -208,14 +214,18 @@ int do_getinfo(struct proc * caller, message * m_ptr)
break;
}
default:
printf("do_getinfo: invalid request %d\n", m_ptr->I_REQUEST);
printf("do_getinfo: invalid request %d\n",
m_ptr->m_lsys_krn_sys_getinfo.request);
return(EINVAL);
}
/* Try to make the actual copy for the requested data. */
if (m_ptr->I_VAL_LEN > 0 && length > m_ptr->I_VAL_LEN) return (E2BIG);
if (m_ptr->m_lsys_krn_sys_getinfo.val_len > 0 &&
length > m_ptr->m_lsys_krn_sys_getinfo.val_len)
return (E2BIG);
r = data_copy_vmcheck(caller, KERNEL, src_vir, caller->p_endpoint,
(vir_bytes) m_ptr->I_VAL_PTR, length);
m_ptr->m_lsys_krn_sys_getinfo.val_ptr, length);
if(r != OK) return r;

View file

@ -47,10 +47,10 @@ int env_get_param(const char *key, char *value, int max_len)
/* Get copy of boot monitor parameters. */
m.m_type = SYS_GETINFO;
m.I_REQUEST = GET_MONPARAMS;
m.I_ENDPT = SELF;
m.I_VAL_LEN = sizeof(mon_params);
m.I_VAL_PTR = mon_params;
m.m_lsys_krn_sys_getinfo.request = GET_MONPARAMS;
m.m_lsys_krn_sys_getinfo.endpt = SELF;
m.m_lsys_krn_sys_getinfo.val_len = sizeof(mon_params);
m.m_lsys_krn_sys_getinfo.val_ptr = mon_params;
if ((s=_kernel_call(SYS_GETINFO, &m)) != OK) {
printf("SYS_GETINFO: %d (size %u)\n", s, sizeof(mon_params));
return(s);

View file

@ -15,12 +15,12 @@ int len2; /* length or process nr */
{
message m;
m.I_REQUEST = request;
m.I_ENDPT = SELF; /* always store values at caller */
m.I_VAL_PTR = ptr;
m.I_VAL_LEN = len;
m.I_VAL_PTR2 = ptr2;
m.I_VAL_LEN2_E = len2;
m.m_lsys_krn_sys_getinfo.request = request;
m.m_lsys_krn_sys_getinfo.endpt = SELF; /* always store values at caller */
m.m_lsys_krn_sys_getinfo.val_ptr = ptr;
m.m_lsys_krn_sys_getinfo.val_len = len;
m.m_lsys_krn_sys_getinfo.val_ptr2 = ptr2;
m.m_lsys_krn_sys_getinfo.val_len2_e = len2;
return(_kernel_call(SYS_GETINFO, &m));
}
@ -35,7 +35,7 @@ int sys_whoami(endpoint_t *who_ep, char *who_name, int len,
int r;
int lenmin;
m.I_REQUEST = GET_WHOAMI;
m.m_lsys_krn_sys_getinfo.request = GET_WHOAMI;
if(len < 2)
return EINVAL;
@ -43,12 +43,12 @@ int sys_whoami(endpoint_t *who_ep, char *who_name, int len,
if((r = _kernel_call(SYS_GETINFO, &m)) != OK)
return r;
lenmin = MIN((size_t) len, sizeof(m.GIWHO_NAME)) - 1;
lenmin = MIN((size_t) len, sizeof(m.m_krn_lsys_sys_getwhoami.name)) - 1;
strncpy(who_name, m.GIWHO_NAME, lenmin);
strncpy(who_name, m.m_krn_lsys_sys_getwhoami.name, lenmin);
who_name[lenmin] = '\0';
*who_ep = m.GIWHO_EP;
*priv_flags = m.GIWHO_PRIVFLAGS;
*who_ep = m.m_krn_lsys_sys_getwhoami.endpt;
*priv_flags = m.m_krn_lsys_sys_getwhoami.privflags;
return OK;
}