static char *
ExtractCommandLineFromAddressSpaceFile(psinfo_t *procInfo) //IN: psinfo struct
{
int argc;
int i;
char tempPath[MAXPATHLEN];
char *buf;
FileIODescriptor asFd;
FileIOResult res;
DynBuf cmdLine;
DynBufArray args;
pid_t pid;
FileIO_Invalidate(&asFd);
pid = procInfo->pr_pid;
if (Str_Snprintf(tempPath,
sizeof tempPath,
"/proc/%"FMT64"d/as",
(int64_t)pid) == -1) {
/* This should not happen. MAXPATHLEN should be large enough. */
ASSERT(FALSE);
}
res = FileIO_Open(&asFd,
tempPath,
FILEIO_OPEN_ACCESS_READ,
FILEIO_OPEN);
if (res != FILEIO_SUCCESS) {
Warning("Could not open address space file for pid %"FMT64"d, %s\n",
(int64_t)pid,
FileIO_MsgError(res));
return NULL;
}
buf = NULL;
if (ReadArgsFromAddressSpaceFile(asFd, procInfo, &args)) {
/* Concatenate the strings in args into cmdLine. */
DynBuf_Init(&cmdLine);
argc = DynBufArray_Count(&args);
for (i = 0; i < argc; i++) {
buf = DynBuf_Get(DynBufArray_AddressOf(&args, i));
DynBuf_Append(&cmdLine, buf, strlen(buf));
if (i + 1 < argc) {
DynBuf_Append(&cmdLine, " ", 1);
}
DynBuf_Destroy(DynBufArray_AddressOf(&args, i));
}
DynBuf_AppendString(&cmdLine,"");
DynBufArray_Destroy(&args);
DynBuf_Trim(&cmdLine);
buf = DynBuf_Detach(&cmdLine);
DynBuf_Destroy(&cmdLine);
}
FileIO_Close(&asFd);
return buf;
}
static Bool
ReadArgsFromAddressSpaceFile(FileIODescriptor asFd, //IN
psinfo_t *psInfo, //IN
DynBufArray *cmdLineArr) //OUT
{
uintptr_t *argOffs;
uintptr_t argOff;
uintptr_t nextArgOff;
int argc;
int i;
char *argBuf;
char *argBufPtr;
DynBuf *arg;
argc = psInfo->pr_argc;
DynBufArray_Init(cmdLineArr, argc);
for (i = 0; i < argc; i++) {
DynBuf_Init(DynBufArray_AddressOf(cmdLineArr, i));
}
if (argc == 0) {
return TRUE;
}
argOffs = Util_SafeCalloc(argc, sizeof *argOffs);
if (argOffs == NULL) {
return FALSE;
}
if (!ReadOffsetsFromAddressSpaceFile(asFd, psInfo, argOffs)) {
goto fail;
}
/* Read the command line arguments into the cmdLineArr array. */
nextArgOff = argc > 0 ? argOffs[0] : 0;
i = 0;
while (i < argc) {
argOff = argOffs[i];
/*
* The argument strings are contiguous in the address space file. So
* argOff[i] + strlen(arg[i]) + 1 should be equal to argOff[i + 1].
*/
if ((argOff == 0) || (argOff != nextArgOff)) {
goto fail;
}
argBuf = ExtractArgStringFromAddressSpaceFile(asFd, argOff);
if (argBuf == NULL) {
goto fail;
}
nextArgOff = argOff + strlen(argBuf) + 1;
argBufPtr = argBuf + strlen(argBuf);
while ((argBufPtr > argBuf) && isspace(*(argBufPtr - 1))) {
argBufPtr--;
}
*argBufPtr = '\0';
arg = DynBufArray_AddressOf(cmdLineArr, i);
if (!DynBuf_Append(arg,
argBuf,
strlen(argBuf) + 1)) {
free(argBuf);
goto fail;
}
free(argBuf);
i++;
}
return TRUE;
fail:
Warning("Failed to read command line arguments\n");
argc = DynBufArray_Count(cmdLineArr);
for (i = 0; i < argc; i++) {
arg = DynArray_AddressOf(cmdLineArr, i);
DynBuf_Destroy(arg);
}
DynBufArray_SetCount(cmdLineArr, 0);
DynBufArray_Destroy(cmdLineArr);
free(argOffs);
return FALSE;
}
static char *
ExtractCommandLineFromAddressSpaceFile(psinfo_t *procInfo, //IN: psinfo struct
char **procCmdName) //OUT: command name
{
int argc;
int i;
char tempPath[MAXPATHLEN];
char *buf;
FileIODescriptor asFd;
FileIOResult res;
DynBuf cmdLine;
DynBufArray args;
pid_t pid;
char *cmdNameBegin;
if (NULL != procCmdName) {
*procCmdName = NULL;
}
FileIO_Invalidate(&asFd);
pid = procInfo->pr_pid;
if (Str_Snprintf(tempPath,
sizeof tempPath,
"/proc/%"FMT64"d/as",
(int64_t)pid) == -1) {
/* This should not happen. MAXPATHLEN should be large enough. */
ASSERT(FALSE);
}
res = FileIO_Open(&asFd,
tempPath,
FILEIO_OPEN_ACCESS_READ,
FILEIO_OPEN);
if (res != FILEIO_SUCCESS) {
Warning("Could not open address space file for pid %"FMT64"d, %s\n",
(int64_t)pid,
FileIO_MsgError(res));
return NULL;
}
buf = NULL;
if (ReadArgsFromAddressSpaceFile(asFd, procInfo, &args)) {
/* Concatenate the strings in args into cmdLine. */
DynBuf_Init(&cmdLine);
argc = DynBufArray_Count(&args);
for (i = 0; i < argc; i++) {
buf = DynBuf_Get(DynBufArray_AddressOf(&args, i));
DynBuf_Append(&cmdLine, buf, strlen(buf));
if (i + 1 < argc) {
DynBuf_Append(&cmdLine, " ", 1);
}
if (NULL != procCmdName && 0 == i) {
/*
* Store the command name of the process.
* Find the last path separator, to get the cmd name.
* If no separator is found, then use the whole name.
*/
cmdNameBegin = strrchr(buf, '/');
if (NULL == cmdNameBegin) {
cmdNameBegin = buf;
} else {
/*
* Skip over the last separator.
*/
cmdNameBegin++;
}
*procCmdName = Unicode_Alloc(cmdNameBegin, STRING_ENCODING_DEFAULT);
}
DynBuf_Destroy(DynBufArray_AddressOf(&args, i));
}
DynBuf_AppendString(&cmdLine,"");
DynBufArray_Destroy(&args);
DynBuf_Trim(&cmdLine);
buf = DynBuf_Detach(&cmdLine);
DynBuf_Destroy(&cmdLine);
}
FileIO_Close(&asFd);
return buf;
}
