diff options
| -rw-r--r-- | nx-X11/programs/Xserver/Imakefile | 9 | ||||
| -rw-r--r-- | nx-X11/programs/Xserver/dix/dispatch.c | 10 | ||||
| -rw-r--r-- | nx-X11/programs/Xserver/dix/main.c | 3 | ||||
| -rw-r--r-- | nx-X11/programs/Xserver/include/Imakefile | 1 | ||||
| -rw-r--r-- | nx-X11/programs/Xserver/include/client.h | 60 | ||||
| -rw-r--r-- | nx-X11/programs/Xserver/include/dixstruct.h | 3 | ||||
| -rw-r--r-- | nx-X11/programs/Xserver/os/Imakefile | 2 | ||||
| -rw-r--r-- | nx-X11/programs/Xserver/os/client.c | 397 |
8 files changed, 485 insertions, 0 deletions
diff --git a/nx-X11/programs/Xserver/Imakefile b/nx-X11/programs/Xserver/Imakefile index 2af91821d..745b26154 100644 --- a/nx-X11/programs/Xserver/Imakefile +++ b/nx-X11/programs/Xserver/Imakefile @@ -323,6 +323,15 @@ NXAGENTNXLIBS = -L../../../nxcomp \ -lXcompshad \ -lXrender -lXfixes -lXfont -lXcomposite -lXdmcp \ -lNX_X11 -lXext +#elif defined(OpenBSDArchitecture) +NXAGENTNXLIBS = -L../../../nxcomp \ + -L../../../nx-X11/exports/lib \ + -L../../../nxcompshad \ + -lkvm \ + -lXcomp \ + -lXcompshad \ + -lXrender -lXfixes -lXfont -lXcomposite -lXinerama -lXdmcp \ + -lNX_X11 -lXext #else NXAGENTNXLIBS = -L../../../nxcomp \ -L../../../nx-X11/exports/lib \ diff --git a/nx-X11/programs/Xserver/dix/dispatch.c b/nx-X11/programs/Xserver/dix/dispatch.c index 3869ef723..16b94301f 100644 --- a/nx-X11/programs/Xserver/dix/dispatch.c +++ b/nx-X11/programs/Xserver/dix/dispatch.c @@ -112,6 +112,7 @@ int ProcInitialConnection(); #include "inputstr.h" #include "xkbsrv.h" #endif +#include "client.h" #define mskcnt ((MAXCLIENTS + 31) / 32) #define BITMASK(i) (1U << ((i) & 31)) @@ -3560,6 +3561,9 @@ CloseDownClient(register ClientPtr client) CallCallbacks((&ClientStateCallback), (void *)&clientinfo); } FreeClientResources(client); + /* Disable client ID tracking. This must be done after + * ClientStateCallback. */ + ReleaseClientIds(client); if (client->index < nextFreeClientID) nextFreeClientID = client->index; clients[client->index] = NullClient; @@ -3643,6 +3647,7 @@ void InitClient(ClientPtr client, int i, void * ospriv) client->smart_start_tick = SmartScheduleTime; client->smart_stop_tick = SmartScheduleTime; client->smart_check_tick = SmartScheduleTime; + client->clientIds = NULL; } extern int clientPrivateLen; @@ -3724,6 +3729,11 @@ ClientPtr NextAvailableClient(void * ospriv) currentMaxClients++; while ((nextFreeClientID < MAXCLIENTS) && clients[nextFreeClientID]) nextFreeClientID++; + + /* Enable client ID tracking. This must be done before + * ClientStateCallback. */ + ReserveClientIds(client); + if (ClientStateCallback) { NewClientInfoRec clientinfo; diff --git a/nx-X11/programs/Xserver/dix/main.c b/nx-X11/programs/Xserver/dix/main.c index 7bd41d865..50bbeb3dc 100644 --- a/nx-X11/programs/Xserver/dix/main.c +++ b/nx-X11/programs/Xserver/dix/main.c @@ -100,6 +100,7 @@ Equipment Corporation. #include "site.h" #include "dixfont.h" #include "extnsionst.h" +#include "client.h" #ifdef PANORAMIX #include "panoramiXsrv.h" #else @@ -382,6 +383,7 @@ main(int argc, char *argv[], char *envp[]) InitInput(argc, argv); if (InitAndStartDevices() != Success) FatalError("failed to initialize core devices"); + ReserveClientIds(serverClient); InitFonts(); if (loadableFonts) { @@ -470,6 +472,7 @@ main(int argc, char *argv[], char *envp[]) #endif FreeAuditTimer(); + ReleaseClientIds(serverClient); free(serverClient->devPrivates); serverClient->devPrivates = NULL; diff --git a/nx-X11/programs/Xserver/include/Imakefile b/nx-X11/programs/Xserver/include/Imakefile index d1d7bd651..53f193ec8 100644 --- a/nx-X11/programs/Xserver/include/Imakefile +++ b/nx-X11/programs/Xserver/include/Imakefile @@ -16,6 +16,7 @@ depend:: InstallDriverSDKNonExecFile(XIstubs.h,$(DRIVERSDKINCLUDEDIR)) InstallDriverSDKNonExecFile(bstore.h,$(DRIVERSDKINCLUDEDIR)) InstallDriverSDKNonExecFile(bstorestr.h,$(DRIVERSDKINCLUDEDIR)) +InstallDriverSDKNonExecFile(client.h,$(DRIVERSDKINCLUDEDIR)) InstallDriverSDKNonExecFile(colormap.h,$(DRIVERSDKINCLUDEDIR)) InstallDriverSDKNonExecFile(colormapst.h,$(DRIVERSDKINCLUDEDIR)) InstallDriverSDKNonExecFile(cursor.h,$(DRIVERSDKINCLUDEDIR)) diff --git a/nx-X11/programs/Xserver/include/client.h b/nx-X11/programs/Xserver/include/client.h new file mode 100644 index 000000000..87f2b1172 --- /dev/null +++ b/nx-X11/programs/Xserver/include/client.h @@ -0,0 +1,60 @@ +/* + * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). All + * rights reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +/* Author: Rami Ylimäki <rami.ylimaki@vincit.fi> */ + +#ifndef CLIENT_H +#define CLIENT_H + +#ifdef HAVE_DIX_CONFIG_H +#include <dix-config.h> +#endif /* HAVE_DIX_CONFIG_H */ +#include <X11/Xfuncproto.h> +#include <sys/types.h> + +/* Client IDs. Use GetClientPid, GetClientCmdName and GetClientCmdArgs + * instead of accessing the fields directly. */ +typedef struct { + pid_t pid; /* process ID, -1 if not available */ + const char *cmdname; /* process name, NULL if not available */ + const char *cmdargs; /* process arguments, NULL if not available */ +} ClientIdRec, *ClientIdPtr; + +struct _Client; + +/* Initialize and clean up. */ +void ReserveClientIds(struct _Client *client); +void ReleaseClientIds(struct _Client *client); + +/* Determine client IDs for caching. Exported on purpose for + * extensions such as SELinux. */ +extern _X_EXPORT pid_t DetermineClientPid(struct _Client *client); +extern _X_EXPORT void DetermineClientCmd(pid_t, const char **cmdname, + const char **cmdargs); + +/* Query cached client IDs. Exported on purpose for drivers. */ +extern _X_EXPORT pid_t GetClientPid(struct _Client *client); +extern _X_EXPORT const char *GetClientCmdName(struct _Client *client); +extern _X_EXPORT const char *GetClientCmdArgs(struct _Client *client); + +#endif /* CLIENT_H */ diff --git a/nx-X11/programs/Xserver/include/dixstruct.h b/nx-X11/programs/Xserver/include/dixstruct.h index 1096f5c40..b8ee8e9cf 100644 --- a/nx-X11/programs/Xserver/include/dixstruct.h +++ b/nx-X11/programs/Xserver/include/dixstruct.h @@ -24,6 +24,7 @@ SOFTWARE. #ifndef DIXSTRUCT_H #define DIXSTRUCT_H +#include "client.h" #include "dix.h" #include "resource.h" #include "cursor.h" @@ -141,6 +142,8 @@ typedef struct _Client { long smart_start_tick; long smart_stop_tick; long smart_check_tick; + + ClientIdPtr clientIds; } ClientRec; /* diff --git a/nx-X11/programs/Xserver/os/Imakefile b/nx-X11/programs/Xserver/os/Imakefile index 144cb5a55..86f5cd4e6 100644 --- a/nx-X11/programs/Xserver/os/Imakefile +++ b/nx-X11/programs/Xserver/os/Imakefile @@ -128,6 +128,7 @@ TMEMCMP_OBJS = timingsafe_memcmp.o BOOTSTRAPCFLAGS = SRCS = WaitFor.c \ access.c \ + client.c \ connection.c \ io.c \ $(COLOR_SRCS) \ @@ -151,6 +152,7 @@ BOOTSTRAPCFLAGS = OBJS = WaitFor.o \ access.o \ + client.o \ connection.o \ io.o \ $(COLOR_OBJS) \ diff --git a/nx-X11/programs/Xserver/os/client.c b/nx-X11/programs/Xserver/os/client.c new file mode 100644 index 000000000..ef5e3935d --- /dev/null +++ b/nx-X11/programs/Xserver/os/client.c @@ -0,0 +1,397 @@ +/* + * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). All + * rights reserved. + * Copyright (c) 1993, 2010, Oracle and/or its affiliates. All rights reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +/** + * @file + * + * This file contains functionality for identifying clients by various + * means. The primary purpose of identification is to simply aid in + * finding out which clients are using X server and how they are using + * it. For example, it's often necessary to monitor what requests + * clients are executing (to spot bad behaviour) and how they are + * allocating resources in X server (to spot excessive resource + * usage). + * + * This framework automatically allocates information, that can be + * used for client identification, when a client connects to the + * server. The information is freed when the client disconnects. The + * allocated information is just a collection of various IDs, such as + * PID and process name for local clients, that are likely to be + * useful in analyzing X server usage. + * + * Users of the framework can query ID information about clients at + * any time. To avoid repeated polling of IDs the users can also + * subscribe for notifications about the availability of ID + * information. IDs have been allocated before ClientStateCallback is + * called with ClientStateInitial state. Similarly the IDs will be + * released after ClientStateCallback is called with ClientStateGone + * state. + * + * Author: Rami Ylimäki <rami.ylimaki@vincit.fi> + */ + +#include <sys/stat.h> +#include <fcntl.h> +#include <unistd.h> + +#include "client.h" +#include "os.h" +#include "dixstruct.h" + +#ifdef __sun +#include <errno.h> +#include <procfs.h> +#endif + +#ifdef __OpenBSD__ +#include <sys/param.h> +#include <sys/sysctl.h> +#include <sys/types.h> + +#include <kvm.h> +#include <limits.h> +#endif + +/** + * Try to determine a PID for a client from its connection + * information. This should be called only once when new client has + * connected, use GetClientPid to determine the PID at other times. + * + * @param[in] client Connection linked to some process. + * + * @return PID of the client. Error (-1) if PID can't be determined + * for the client. + * + * @see GetClientPid + */ +pid_t +DetermineClientPid(struct _Client * client) +{ + LocalClientCredRec *lcc = NULL; + pid_t pid = -1; + + if (client == NullClient) + return pid; + + if (client == serverClient) + return getpid(); + + if (GetLocalClientCreds(client, &lcc) != -1) { + if (lcc->fieldsSet & LCC_PID_SET) + pid = lcc->pid; + FreeLocalClientCreds(lcc); + } + + return pid; +} + +/** + * Try to determine a command line string for a client based on its + * PID. Note that mapping PID to a command hasn't been implemented for + * some operating systems. This should be called only once when a new + * client has connected, use GetClientCmdName/Args to determine the + * string at other times. + * + * @param[in] pid Process ID of a client. + + * @param[out] cmdname Client process name without arguments. You must + * release this by calling free. On error NULL is + * returned. Pass NULL if you aren't interested in + * this value. + * @param[out] cmdargs Arguments to client process. Useful for + * identifying a client that is executed from a + * launcher program. You must release this by + * calling free. On error NULL is returned. Pass + * NULL if you aren't interested in this value. + * + * @see GetClientCmdName/Args + */ +void +DetermineClientCmd(pid_t pid, const char **cmdname, const char **cmdargs) +{ + char path[PATH_MAX + 1]; + int totsize = 0; + int fd = 0; + + if (cmdname) + *cmdname = NULL; + if (cmdargs) + *cmdargs = NULL; + + if (pid == -1) + return; + +#ifdef __sun /* Solaris */ + /* Solaris does not support /proc/pid/cmdline, but makes information + * similar to what ps shows available in a binary structure in the + * /proc/pid/psinfo file. */ + if (snprintf(path, sizeof(path), "/proc/%d/psinfo", pid) < 0) + return; + fd = open(path, O_RDONLY); + if (fd < 0) { + ErrorF("Failed to open %s: %s\n", path, strerror(errno)); + return; + } + else { + psinfo_t psinfo = { 0 }; + char *sp; + + totsize = read(fd, &psinfo, sizeof(psinfo_t)); + close(fd); + if (totsize <= 0) + return; + + /* pr_psargs is the first PRARGSZ (80) characters of the command + * line string - assume up to the first space is the command name, + * since it's not delimited. While there is also pr_fname, that's + * more limited, giving only the first 16 chars of the basename of + * the file that was exec'ed, thus cutting off many long gnome + * command names, or returning "isapython2.6" for all python scripts. + */ + psinfo.pr_psargs[PRARGSZ - 1] = '\0'; + sp = strchr(psinfo.pr_psargs, ' '); + if (sp) + *sp++ = '\0'; + + if (cmdname) + *cmdname = strdup(psinfo.pr_psargs); + + if (cmdargs && sp) + *cmdargs = strdup(sp); + } +#elif defined(__OpenBSD__) + /* on OpenBSD use kvm_getargv() */ + { + kvm_t *kd; + char errbuf[_POSIX2_LINE_MAX]; + char **argv; + struct kinfo_proc *kp; + size_t len = 0; + int i, n; + + kd = kvm_open(NULL, NULL, NULL, KVM_NO_FILES, errbuf); + if (kd == NULL) + return; + kp = kvm_getprocs(kd, KERN_PROC_PID, pid, sizeof(struct kinfo_proc), + &n); + if (n != 1) + return; + argv = kvm_getargv(kd, kp, 0); + *cmdname = strdup(argv[0]); + i = 1; + while (argv[i] != NULL) { + len += strlen(argv[i]) + 1; + i++; + } + *cmdargs = calloc(1, len); + i = 1; + while (argv[i] != NULL) { + strlcat(*cmdargs, argv[i], len); + strlcat(*cmdargs, " ", len); + i++; + } + kvm_close(kd); + } +#else /* Linux using /proc/pid/cmdline */ + + /* Check if /proc/pid/cmdline exists. It's not supported on all + * operating systems. */ + if (snprintf(path, sizeof(path), "/proc/%d/cmdline", pid) < 0) + return; + fd = open(path, O_RDONLY); + if (fd < 0) + return; + + /* Read the contents of /proc/pid/cmdline. It should contain the + * process name and arguments. */ + totsize = read(fd, path, sizeof(path)); + close(fd); + if (totsize <= 0) + return; + path[totsize - 1] = '\0'; + + /* Contruct the process name without arguments. */ + if (cmdname) { + *cmdname = strdup(path); + } + + /* Construct the arguments for client process. */ + if (cmdargs) { + int cmdsize = strlen(path) + 1; + int argsize = totsize - cmdsize; + char *args = NULL; + + if (argsize > 0) + args = malloc(argsize); + if (args) { + int i = 0; + + for (i = 0; i < (argsize - 1); ++i) { + const char c = path[cmdsize + i]; + + args[i] = (c == '\0') ? ' ' : c; + } + args[argsize - 1] = '\0'; + *cmdargs = args; + } + } +#endif +} + +/** + * Called when a new client connects. Allocates client ID information. + * + * @param[in] client Recently connected client. + */ +void +ReserveClientIds(struct _Client *client) +{ +#ifdef CLIENTIDS + if (client == NullClient) + return; + + assert(!client->clientIds); + client->clientIds = calloc(1, sizeof(ClientIdRec)); + if (!client->clientIds) + return; + + client->clientIds->pid = DetermineClientPid(client); + if (client->clientIds->pid != -1) + DetermineClientCmd(client->clientIds->pid, &client->clientIds->cmdname, + &client->clientIds->cmdargs); + + DebugF("client(%lx): Reserved pid(%d).\n", + (unsigned long) client->clientAsMask, client->clientIds->pid); + DebugF("client(%lx): Reserved cmdname(%s) and cmdargs(%s).\n", + (unsigned long) client->clientAsMask, + client->clientIds->cmdname ? client->clientIds->cmdname : "NULL", + client->clientIds->cmdargs ? client->clientIds->cmdargs : "NULL"); +#endif /* CLIENTIDS */ +} + +/** + * Called when an existing client disconnects. Frees client ID + * information. + * + * @param[in] client Recently disconnected client. + */ +void +ReleaseClientIds(struct _Client *client) +{ +#ifdef CLIENTIDS + if (client == NullClient) + return; + + if (!client->clientIds) + return; + + DebugF("client(%lx): Released pid(%d).\n", + (unsigned long) client->clientAsMask, client->clientIds->pid); + DebugF("client(%lx): Released cmdline(%s) and cmdargs(%s).\n", + (unsigned long) client->clientAsMask, + client->clientIds->cmdname ? client->clientIds->cmdname : "NULL", + client->clientIds->cmdargs ? client->clientIds->cmdargs : "NULL"); + + free((void *) client->clientIds->cmdname); /* const char * */ + free((void *) client->clientIds->cmdargs); /* const char * */ + free(client->clientIds); + client->clientIds = NULL; +#endif /* CLIENTIDS */ +} + +/** + * Get cached PID of a client. + * + * param[in] client Client whose PID has been already cached. + * + * @return Cached client PID. Error (-1) if called: + * - before ClientStateInitial client state notification + * - after ClientStateGone client state notification + * - for remote clients + * + * @see DetermineClientPid + */ +pid_t +GetClientPid(struct _Client *client) +{ + if (client == NullClient) + return -1; + + if (!client->clientIds) + return -1; + + return client->clientIds->pid; +} + +/** + * Get cached command name string of a client. + * + * param[in] client Client whose command line string has been already + * cached. + * + * @return Cached client command name. Error (NULL) if called: + * - before ClientStateInitial client state notification + * - after ClientStateGone client state notification + * - for remote clients + * - on OS that doesn't support mapping of PID to command line + * + * @see DetermineClientCmd + */ +const char * +GetClientCmdName(struct _Client *client) +{ + if (client == NullClient) + return NULL; + + if (!client->clientIds) + return NULL; + + return client->clientIds->cmdname; +} + +/** + * Get cached command arguments string of a client. + * + * param[in] client Client whose command line string has been already + * cached. + * + * @return Cached client command arguments. Error (NULL) if called: + * - before ClientStateInitial client state notification + * - after ClientStateGone client state notification + * - for remote clients + * - on OS that doesn't support mapping of PID to command line + * + * @see DetermineClientCmd + */ +const char * +GetClientCmdArgs(struct _Client *client) +{ + if (client == NullClient) + return NULL; + + if (!client->clientIds) + return NULL; + + return client->clientIds->cmdargs; +} |