system.c

linux进程跟踪的工具和源代码

			tprintf("%#lx", tcp->u_arg[1]);
		else if (umoven(tcp, tcp->u_arg[1], sizeof(*arg1), (char *) arg1) < 0)
			tprintf("???");
		else {
			tprintf("{");
			printflags(capabilities, arg1->effective);
			tprintf(", ");
			printflags(capabilities, arg1->permitted);
			tprintf(", ");
			printflags(capabilities, arg1->inheritable);
			tprintf("}");
		} 
	}
	return 0;
}

#else

int sys_capget(tcp)
struct tcb *tcp;
{
	return printargs(tcp);
}

int sys_capset(tcp)
struct tcb *tcp;
{
	return printargs(tcp);
}

#endif

#ifdef LINUX
static struct xlat sysctl_root[] = {
	{ CTL_KERN, "CTL_KERN" },
	{ CTL_VM, "CTL_VM" },
	{ CTL_NET, "CTL_NET" },
	{ CTL_PROC, "CTL_PROC" },
	{ CTL_FS, "CTL_FS" },
	{ CTL_DEBUG, "CTL_DEBUG" },
	{ CTL_DEV, "CTL_DEV" },
	{ 0, NULL }
};

static struct xlat sysctl_kern[] = {
	{ KERN_OSTYPE, "KERN_OSTYPE" },
	{ KERN_OSRELEASE, "KERN_OSRELEASE" },
	{ KERN_OSREV, "KERN_OSREV" },
	{ KERN_VERSION, "KERN_VERSION" },
	{ KERN_SECUREMASK, "KERN_SECUREMASK" },
	{ KERN_PROF, "KERN_PROF" },
	{ KERN_NODENAME, "KERN_NODENAME" },
	{ KERN_DOMAINNAME, "KERN_DOMAINNAME" },
#ifdef KERN_SECURELVL
	{ KERN_SECURELVL, "KERN_SECURELVL" },
#endif
	{ KERN_PANIC, "KERN_PANIC" },
#ifdef KERN_REALROOTDEV
	{ KERN_REALROOTDEV, "KERN_REALROOTDEV" },
#endif
#ifdef KERN_JAVA_INTERPRETER
	{ KERN_JAVA_INTERPRETER, "KERN_JAVA_INTERPRETER" },
#endif
#ifdef KERN_JAVA_APPLETVIEWER
	{ KERN_JAVA_APPLETVIEWER, "KERN_JAVA_APPLETVIEWER" },
#endif
	{ KERN_SPARC_REBOOT, "KERN_SPARC_REBOOT" },
	{ KERN_CTLALTDEL, "KERN_CTLALTDEL" },
	{ KERN_PRINTK, "KERN_PRINTK" },
	{ KERN_NAMETRANS, "KERN_NAMETRANS" },
	{ KERN_PPC_HTABRECLAIM, "KERN_PPC_HTABRECLAIM" },
	{ KERN_PPC_ZEROPAGED, "KERN_PPC_ZEROPAGED" },
	{ KERN_PPC_POWERSAVE_NAP, "KERN_PPC_POWERSAVE_NAP" },
	{ KERN_MODPROBE, "KERN_MODPROBE" },
	{ KERN_SG_BIG_BUFF, "KERN_SG_BIG_BUFF" },
	{ KERN_ACCT, "KERN_ACCT" },
	{ KERN_PPC_L2CR, "KERN_PPC_L2CR" },
	{ KERN_RTSIGNR, "KERN_RTSIGNR" },
	{ KERN_RTSIGMAX, "KERN_RTSIGMAX" },
	{ KERN_SHMMAX, "KERN_SHMMAX" },
	{ KERN_MSGMAX, "KERN_MSGMAX" },
	{ KERN_MSGMNB, "KERN_MSGMNB" },
	{ KERN_MSGPOOL, "KERN_MSGPOOL" },
	{ 0, NULL }
};

static struct xlat sysctl_vm[] = {
	{ VM_SWAPCTL, "VM_SWAPCTL" },
	{ VM_SWAPOUT, "VM_SWAPOUT" },
	{ VM_FREEPG, "VM_FREEPG" },
	{ VM_BDFLUSH, "VM_BDFLUSH" },
	{ VM_OVERCOMMIT_MEMORY, "VM_OVERCOMMIT_MEMORY" },
	{ VM_BUFFERMEM, "VM_BUFFERMEM" },
	{ VM_PAGECACHE, "VM_PAGECACHE" },
	{ VM_PAGERDAEMON, "VM_PAGERDAEMON" },
	{ VM_PGT_CACHE, "VM_PGT_CACHE" },
	{ VM_PAGE_CLUSTER, "VM_PAGE_CLUSTER" },
	{ 0, NULL },
};

static struct xlat sysctl_net[] = {
	{ NET_CORE, "NET_CORE" },
	{ NET_ETHER, "NET_ETHER" },
	{ NET_802, "NET_802" },
	{ NET_UNIX, "NET_UNIX" },
	{ NET_IPV4, "NET_IPV4" },
	{ NET_IPX, "NET_IPX" },
	{ NET_ATALK, "NET_ATALK" },
	{ NET_NETROM, "NET_NETROM" },
	{ NET_AX25, "NET_AX25" },
	{ NET_BRIDGE, "NET_BRIDGE" },
	{ NET_ROSE, "NET_ROSE" },
	{ NET_IPV6, "NET_IPV6" },
	{ NET_X25, "NET_X25" },
	{ NET_TR, "NET_TR" },
	{ NET_DECNET, "NET_DECNET" },
	{ 0, NULL }
};

static struct xlat sysctl_net_core[] = {
	{ NET_CORE_WMEM_MAX, "NET_CORE_WMEM_MAX" },
	{ NET_CORE_RMEM_MAX, "NET_CORE_RMEM_MAX" },
	{ NET_CORE_WMEM_DEFAULT, "NET_CORE_WMEM_DEFAULT" },
	{ NET_CORE_RMEM_DEFAULT, "NET_CORE_RMEM_DEFAULT" },
	{ NET_CORE_MAX_BACKLOG, "NET_CORE_MAX_BACKLOG" },
	{ NET_CORE_FASTROUTE, "NET_CORE_FASTROUTE" },
	{ NET_CORE_MSG_COST, "NET_CORE_MSG_COST" },
	{ NET_CORE_MSG_BURST, "NET_CORE_MSG_BURST" },
	{ NET_CORE_OPTMEM_MAX, "NET_CORE_OPTMEM_MAX" },
	{ 0, NULL }
};

static struct xlat sysctl_net_unix[] = {
	{ NET_UNIX_DESTROY_DELAY, "NET_UNIX_DESTROY_DELAY" },
	{ NET_UNIX_DELETE_DELAY, "NET_UNIX_DELETE_DELAY" },
	{ 0, NULL }
};

static struct xlat sysctl_net_ipv4[] = {
	{ NET_IPV4_FORWARD, "NET_IPV4_FORWARD" },
	{ NET_IPV4_DYNADDR, "NET_IPV4_DYNADDR" },
	{ NET_IPV4_CONF, "NET_IPV4_CONF" },
	{ NET_IPV4_NEIGH, "NET_IPV4_NEIGH" },
	{ NET_IPV4_ROUTE, "NET_IPV4_ROUTE" },
	{ NET_IPV4_FIB_HASH, "NET_IPV4_FIB_HASH" },
	{ NET_IPV4_TCP_TIMESTAMPS, "NET_IPV4_TCP_TIMESTAMPS" },
	{ NET_IPV4_TCP_WINDOW_SCALING, "NET_IPV4_TCP_WINDOW_SCALING" },
	{ NET_IPV4_TCP_SACK, "NET_IPV4_TCP_SACK" },
	{ NET_IPV4_TCP_RETRANS_COLLAPSE, "NET_IPV4_TCP_RETRANS_COLLAPSE" },
	{ NET_IPV4_DEFAULT_TTL, "NET_IPV4_DEFAULT_TTL" },
	{ NET_IPV4_AUTOCONFIG, "NET_IPV4_AUTOCONFIG" },
	{ NET_IPV4_NO_PMTU_DISC, "NET_IPV4_NO_PMTU_DISC" },
	{ NET_IPV4_TCP_SYN_RETRIES, "NET_IPV4_TCP_SYN_RETRIES" },
	{ NET_IPV4_IPFRAG_HIGH_THRESH, "NET_IPV4_IPFRAG_HIGH_THRESH" },
	{ NET_IPV4_IPFRAG_LOW_THRESH, "NET_IPV4_IPFRAG_LOW_THRESH" },
	{ NET_IPV4_IPFRAG_TIME, "NET_IPV4_IPFRAG_TIME" },
	{ NET_IPV4_TCP_MAX_KA_PROBES, "NET_IPV4_TCP_MAX_KA_PROBES" },
	{ NET_IPV4_TCP_KEEPALIVE_TIME, "NET_IPV4_TCP_KEEPALIVE_TIME" },
	{ NET_IPV4_TCP_KEEPALIVE_PROBES, "NET_IPV4_TCP_KEEPALIVE_PROBES" },
	{ NET_IPV4_TCP_RETRIES1, "NET_IPV4_TCP_RETRIES1" },
	{ NET_IPV4_TCP_RETRIES2, "NET_IPV4_TCP_RETRIES2" },
	{ NET_IPV4_TCP_FIN_TIMEOUT, "NET_IPV4_TCP_FIN_TIMEOUT" },
	{ NET_IPV4_IP_MASQ_DEBUG, "NET_IPV4_IP_MASQ_DEBUG" },
	{ NET_TCP_SYNCOOKIES, "NET_TCP_SYNCOOKIES" },
	{ NET_TCP_STDURG, "NET_TCP_STDURG" },
	{ NET_TCP_RFC1337, "NET_TCP_RFC1337" },
	{ NET_TCP_SYN_TAILDROP, "NET_TCP_SYN_TAILDROP" },
	{ NET_TCP_MAX_SYN_BACKLOG, "NET_TCP_MAX_SYN_BACKLOG" },
	{ NET_IPV4_LOCAL_PORT_RANGE, "NET_IPV4_LOCAL_PORT_RANGE" },
	{ NET_IPV4_ICMP_ECHO_IGNORE_ALL, "NET_IPV4_ICMP_ECHO_IGNORE_ALL" },
	{ NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS, "NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS" },
	{ NET_IPV4_ICMP_SOURCEQUENCH_RATE, "NET_IPV4_ICMP_SOURCEQUENCH_RATE" },
	{ NET_IPV4_ICMP_DESTUNREACH_RATE, "NET_IPV4_ICMP_DESTUNREACH_RATE" },
	{ NET_IPV4_ICMP_TIMEEXCEED_RATE, "NET_IPV4_ICMP_TIMEEXCEED_RATE" },
	{ NET_IPV4_ICMP_PARAMPROB_RATE, "NET_IPV4_ICMP_PARAMPROB_RATE" },
	{ NET_IPV4_ICMP_ECHOREPLY_RATE, "NET_IPV4_ICMP_ECHOREPLY_RATE" },
	{ NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES, "NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES" },
	{ NET_IPV4_IGMP_MAX_MEMBERSHIPS, "NET_IPV4_IGMP_MAX_MEMBERSHIPS" },
	{  0, NULL }
};

static struct xlat sysctl_net_ipv4_route[] = {
	{ NET_IPV4_ROUTE_FLUSH, "NET_IPV4_ROUTE_FLUSH" },
	{ NET_IPV4_ROUTE_MIN_DELAY, "NET_IPV4_ROUTE_MIN_DELAY" },
	{ NET_IPV4_ROUTE_MAX_DELAY, "NET_IPV4_ROUTE_MAX_DELAY" },
	{ NET_IPV4_ROUTE_GC_THRESH, "NET_IPV4_ROUTE_GC_THRESH" },
	{ NET_IPV4_ROUTE_MAX_SIZE, "NET_IPV4_ROUTE_MAX_SIZE" },
	{ NET_IPV4_ROUTE_GC_MIN_INTERVAL, "NET_IPV4_ROUTE_GC_MIN_INTERVAL" },
	{ NET_IPV4_ROUTE_GC_TIMEOUT, "NET_IPV4_ROUTE_GC_TIMEOUT" },
	{ NET_IPV4_ROUTE_GC_INTERVAL, "NET_IPV4_ROUTE_GC_INTERVAL" },
	{ NET_IPV4_ROUTE_REDIRECT_LOAD, "NET_IPV4_ROUTE_REDIRECT_LOAD" },
	{ NET_IPV4_ROUTE_REDIRECT_NUMBER, "NET_IPV4_ROUTE_REDIRECT_NUMBER" },
	{ NET_IPV4_ROUTE_REDIRECT_SILENCE, "NET_IPV4_ROUTE_REDIRECT_SILENCE" },
	{ NET_IPV4_ROUTE_ERROR_COST, "NET_IPV4_ROUTE_ERROR_COST" },
	{ NET_IPV4_ROUTE_ERROR_BURST, "NET_IPV4_ROUTE_ERROR_BURST" },
	{ NET_IPV4_ROUTE_GC_ELASTICITY, "NET_IPV4_ROUTE_GC_ELASTICITY" },
	{ 0, NULL }
};

static struct xlat sysctl_net_ipv4_conf[] = {
	{ NET_IPV4_CONF_FORWARDING, "NET_IPV4_CONF_FORWARDING" },
	{ NET_IPV4_CONF_MC_FORWARDING, "NET_IPV4_CONF_MC_FORWARDING" },
	{ NET_IPV4_CONF_PROXY_ARP, "NET_IPV4_CONF_PROXY_ARP" },
	{ NET_IPV4_CONF_ACCEPT_REDIRECTS, "NET_IPV4_CONF_ACCEPT_REDIRECTS" },
	{ NET_IPV4_CONF_SECURE_REDIRECTS, "NET_IPV4_CONF_SECURE_REDIRECTS" },
	{ NET_IPV4_CONF_SEND_REDIRECTS, "NET_IPV4_CONF_SEND_REDIRECTS" },
	{ NET_IPV4_CONF_SHARED_MEDIA, "NET_IPV4_CONF_SHARED_MEDIA" },
	{ NET_IPV4_CONF_RP_FILTER, "NET_IPV4_CONF_RP_FILTER" },
	{ NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE, "NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE" },
	{ NET_IPV4_CONF_BOOTP_RELAY, "NET_IPV4_CONF_BOOTP_RELAY" },
	{ NET_IPV4_CONF_LOG_MARTIANS, "NET_IPV4_CONF_LOG_MARTIANS" },
	{ 0, NULL }
};

static struct xlat sysctl_net_ipv6[] = {
	{ NET_IPV6_CONF, "NET_IPV6_CONF" },
	{ NET_IPV6_NEIGH, "NET_IPV6_NEIGH" },
	{ NET_IPV6_ROUTE, "NET_IPV6_ROUTE" },
	{ 0, NULL }
};

static struct xlat sysctl_net_ipv6_route[] = {
	{ NET_IPV6_ROUTE_FLUSH, "NET_IPV6_ROUTE_FLUSH" },
	{ NET_IPV6_ROUTE_GC_THRESH, "NET_IPV6_ROUTE_GC_THRESH" },
	{ NET_IPV6_ROUTE_MAX_SIZE, "NET_IPV6_ROUTE_MAX_SIZE" },
	{ NET_IPV6_ROUTE_GC_MIN_INTERVAL, "NET_IPV6_ROUTE_GC_MIN_INTERVAL" },
	{ NET_IPV6_ROUTE_GC_TIMEOUT, "NET_IPV6_ROUTE_GC_TIMEOUT" },
	{ NET_IPV6_ROUTE_GC_INTERVAL, "NET_IPV6_ROUTE_GC_INTERVAL" },
	{ NET_IPV6_ROUTE_GC_ELASTICITY, "NET_IPV6_ROUTE_GC_ELASTICITY" },
	{ 0, NULL }
};

int
sys_sysctl(tcp)
struct tcb *tcp;
{
	struct __sysctl_args info;
	int *name;
	umove (tcp, tcp->u_arg[0], &info);

	name = alloca (sizeof (int) * info.nlen);
	umoven(tcp, (size_t) info.name, sizeof (int) * info.nlen, (char *) name);

	if (entering(tcp)) {
		int cnt = 0;

		tprintf("{{");

		if (info.nlen == 0)
			goto out;
		printxval(sysctl_root, name[0], "CTL_???");
		++cnt;

		if (info.nlen == 1)
			goto out;
		switch (name[0]) {
		case CTL_KERN:
			tprintf(", ");
			printxval(sysctl_kern, name[1], "KERN_???");
			++cnt;
			break;
		case CTL_VM:
			tprintf(", ");
			printxval(sysctl_vm, name[1], "VM_???");
			++cnt;
			break;
		case CTL_NET:
			tprintf(", ");
			printxval(sysctl_net, name[1], "NET_???");
			++cnt;

			if (info.nlen == 2)
				goto out;
			switch (name[1]) {
			case NET_CORE:
				tprintf(", ");
				printxval(sysctl_net_core, name[2],
					  "NET_CORE_???");
				break;
			case NET_UNIX:
				tprintf(", ");
				printxval(sysctl_net_unix, name[2],
					  "NET_UNIX_???");
				break;
			case NET_IPV4:
				tprintf(", ");
				printxval(sysctl_net_ipv4, name[2],
					  "NET_IPV4_???");

				if (info.nlen == 3)
					goto out;
				switch (name[2]) {
				case NET_IPV4_ROUTE:
					tprintf(", ");
					printxval(sysctl_net_ipv4_route,
						  name[3],
						  "NET_IPV4_ROUTE_???");
					break;
				case NET_IPV4_CONF:
					tprintf(", ");
					printxval(sysctl_net_ipv4_conf,
						  name[3],
						  "NET_IPV4_CONF_???");
					break;
				default:
					goto out;
				}
				break;
			case NET_IPV6:
				tprintf(", ");
				printxval(sysctl_net_ipv6, name[2],
					  "NET_IPV6_???");

				if (info.nlen == 3)
					goto out;
				switch (name[2]) {
				case NET_IPV6_ROUTE:
					tprintf(", ");
					printxval(sysctl_net_ipv6_route,
						  name[3],
						  "NET_IPV6_ROUTE_???");
					break;
				default:
					goto out;
				}
				break;
			default:
				goto out;
			}
			break;
		default:
			goto out;
		}
	out:
		while (cnt < info.nlen)
			tprintf(", %x", name[cnt++]);
		tprintf("}, %d, ", info.nlen);
	} else {
		size_t oldlen;
		umove(tcp, (size_t)info.oldlenp, &oldlen);
		if (info.nlen >= 2
		    && ((name[0] == CTL_KERN
			 && (name[1] == KERN_OSRELEASE
			     || name[1] == KERN_OSTYPE
#ifdef KERN_JAVA_INTERPRETER
			     || name[1] == KERN_JAVA_INTERPRETER
#endif
#ifdef KERN_JAVA_APPLETVIEWER
			     || name[1] == KERN_JAVA_APPLETVIEWER
#endif
				 )))) {
			printpath(tcp, (size_t)info.oldval);
			tprintf(", %Zu, ", oldlen);
			if (info.newval == 0)
				tprintf("NULL");
			else if (syserror(tcp))
				tprintf("%p", info.newval);
			else
				printpath(tcp, (size_t)info.newval);
			tprintf(", %Zd", info.newlen);
		} else {
			tprintf("%p, %Zd, %p, %Zd", info.oldval, oldlen,
				info.newval, info.newlen);
		}
		tprintf("}");
	}
	return 0;
}
#else
int sys_sysctl(tcp)
struct tcb *tcp;
{
	return printargs(tcp);
}
#endif

#ifdef FREEBSD
#include <sys/sysctl.h>

int sys___sysctl(tcp)
struct tcb *tcp;
{
	int qoid[CTL_MAXNAME+2];
	char ctl[1024];
	size_t len;
	int i, numeric;
	
	if (entering(tcp)) {
		if (tcp->u_arg[1] < 0 || tcp->u_arg[1] > CTL_MAXNAME ||
		    (umoven(tcp, tcp->u_arg[0], tcp->u_arg[1] * sizeof(int),
			    (char *) (qoid + 2)) < 0))
			tprintf("[...], ");
		else {
			/* Use sysctl to ask the name of the current MIB
			   This uses the undocumented "Staff-functions" used
			   by the sysctl program. See kern_sysctl.c for
			   details. */
			qoid[0] = 0; /* sysctl */
			qoid[1] = 1; /* name */
			i = sizeof(ctl);
			tprintf("[");
			if (sysctl(qoid, tcp->u_arg[1] + 2, ctl, &i, 0, 0) >= 0) {
				numeric = !abbrev(tcp);
				tprintf("%s%s", ctl, numeric ? ", " : "");
			} else
				numeric = 1;
			if (numeric) {
				for (i = 0; i < tcp->u_arg[1]; i++)
					tprintf("%s%d", i ? "." : "", qoid[i + 2]);
			}
			tprintf("], ");
			tprintf("%lu, ", tcp->u_arg[1]);
		}
	} else {
		if (!syserror(tcp) && (umove(tcp, tcp->u_arg[3], &len) >= 0)) {
			printstr(tcp, tcp->u_arg[2], len);
			tprintf(", [%u], ", len);
		} else 
			tprintf("%#lx, %#lx, ", tcp->u_arg[2], tcp->u_arg[3]);
		printstr(tcp, tcp->u_arg[4], tcp->u_arg[5]);
		tprintf(", %lu", tcp->u_arg[5]);
	}
	return 0;
}
#endif

#if UNIXWARE >= 2

#include <sys/ksym.h>
#include <sys/elf.h>

static struct xlat ksym_flags[] = {
	{ STT_NOTYPE,	"STT_NOTYPE"	},	
	{ STT_FUNC,	"STT_FUNC"	},	
	{ STT_OBJECT,	"STT_OBJECT"	},	
	{ 0,		NULL		},
};

int
sys_getksym(tcp)
struct tcb *tcp;
{
	if (entering (tcp)) {
		printstr(tcp, tcp->u_arg[0], -1);
		tprintf(", ");
	}
	else {
		if (syserror(tcp)) {
			tprintf("%#lx, %#lx",
				tcp->u_arg[1], tcp->u_arg[2]);
		}
		else {
			int val;
			printnum (tcp, tcp->u_arg[1], "%#lx");
			tprintf(", ");
			if (umove(tcp, tcp->u_arg[2], &val) < 0) {
				tprintf("%#lx", tcp->u_arg[2]);
			}
			else {
				tprintf("[");
				printxval (ksym_flags, val, "STT_???");
				tprintf("]");
			}
		}
	}

	return 0;
}

#endif /* UNIXWARE > 2 */

#ifdef MIPS

static struct xlat_sysmips[] = {
	{ SETNAME,		"SETNAME"	},
	{ FLUSH_CACHE,		"FLUSH_CACHE"	},
	{ MIPS_FIXADE,		"MIPS_FIXADE"	},
	{ MIPS_RDNVRAM,		"MIPS_RDNVRAM"	},
	{ MIPS_ATOMIC_SET,	"MIPS_ATOMIC_SET"	},
	{ 0, NULL }
};

int sys_sysmips(tcp)
struct tcb *tcp;
{
	if (entering(tcp)) {
		printxval(xlat_sysmips, tcp->u_arg[0], "???");
		tprintf(", ");
		if (!verbose(tcp)) {
			tprintf("%d, %d, %d", tcp->u_arg[1], tcp->u_arg[2], tcp->u_arg[3]);
		} else if (tcp->u_arg[0]==SETNAME) {
			char nodename[__NEW_UTS_LEN_1];
			if (umovestr(tcp, tcp->u_arg[1], (__NEW_UTS_LEN_1), nodename) < 0)
				tprintf(", %#lx", tcp->u_arg[1]);
			else
				tprintf(", \"%s\"", nodename);
		} else if (tcp->u_arg[0]==MIPS_ATOMIC_SET) {
			tprintf(", %#lx, 0x%x", tcp->u_arg[1], tcp->u_arg[2]);
		} else if (tcp->u_arg[0]==MIPS_FIXADE) {
			tprintf(", 0x%x", tcp->u_arg[1]);
		} else {
			tprintf("%d, %d, %d", tcp->u_arg[1], tcp->u_arg[2], tcp->u_arg[3]);
		}
	}

	return 0;
}

#endif /* MIPS */