昨天在服务器上执行mysql udf函数sys_exec和sys_eval都很成功，今天重启了一下服务器 打开mysql 用exec执行任意命令都是返回32512 对应linux的127 也就是无权限或者路径错误..
想问一下怎么解决，怎么给udf函数赋予权限啊？我用的是 lib_mysqludf_sys version 0.0.3
/*
lib_mysqludf_sys - a library with miscellaneous (operating) system level functions
Copyright (C) 2007 Roland Bouman
Copyright (C) 2008-2009 Roland Bouman and Bernardo Damele A. G.
web: http://www.mysqludf.org/
email: mysqludfs@gmail.com, bernardo.damele@gmail.com
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#if defined(_WIN32) || defined(_WIN64) || defined(__WIN32__) || defined(WIN32)
#define DLLEXP __declspec(dllexport)
#else
#define DLLEXP
#endif
#ifdef STANDARD
#include <string.h>
#include <stdlib.h>
#include <time.h>
#ifdef __WIN__
typedef unsigned __int64 ulonglong;
typedef __int64 longlong;
#else
typedef unsigned long long ulonglong;
typedef long long longlong;
#endif /*__WIN__*/
#else
#include <my_global.h>
#include <my_sys.h>
#endif
#include <mysql.h>
#include <m_ctype.h>
#include <m_string.h>
#include <stdlib.h>
#include <ctype.h>
#ifdef HAVE_DLOPEN
#ifdef __cplusplus
extern "C" {
#endif
#define LIBVERSION "lib_mysqludf_sys version 0.0.3"
#ifdef __WIN__
#define SETENV(name,value) SetEnvironmentVariable(name,value);
#else
#define SETENV(name,value) setenv(name,value,1);
#endif
DLLEXP
my_bool lib_mysqludf_sys_info_init(
UDF_INIT *initid
, UDF_ARGS *args
, char *message
);
DLLEXP
void lib_mysqludf_sys_info_deinit(
UDF_INIT *initid
);
DLLEXP
char* lib_mysqludf_sys_info(
UDF_INIT *initid
, UDF_ARGS *args
, char* result
, unsigned long* length
, char *is_null
, char *error
);
/**
* sys_get
*
* Gets the value of the specified environment variable.
*/
DLLEXP
my_bool sys_get_init(
UDF_INIT *initid
, UDF_ARGS *args
, char *message
);
DLLEXP
void sys_get_deinit(
UDF_INIT *initid
);
DLLEXP
char* sys_get(
UDF_INIT *initid
, UDF_ARGS *args
, char* result
, unsigned long* length
, char *is_null
, char *error
);
/**
* sys_set
*
* Sets the value of the environment variables.
* This function accepts a set of name/value pairs
* which are then set as environment variables.
* Use sys_get to retrieve the value of such a variable
*/
DLLEXP
my_bool sys_set_init(
UDF_INIT *initid
, UDF_ARGS *args
, char *message
);
DLLEXP
void sys_set_deinit(
UDF_INIT *initid
);
DLLEXP
long long sys_set(
UDF_INIT *initid
, UDF_ARGS *args
, char *is_null
, char *error
);
/**
* sys_exec
*
* executes the argument commandstring and returns its exit status.
* Beware that this can be a security hazard.
*/
DLLEXP
my_bool sys_exec_init(
UDF_INIT *initid
, UDF_ARGS *args
, char *message
);
DLLEXP
void sys_exec_deinit(
UDF_INIT *initid
);
DLLEXP
my_ulonglong sys_exec(
UDF_INIT *initid
, UDF_ARGS *args
, char *is_null
, char *error
);
/**
* sys_eval
*
* executes the argument commandstring and returns its standard output.
* Beware that this can be a security hazard.
*/
DLLEXP
my_bool sys_eval_init(
UDF_INIT *initid
, UDF_ARGS *args
, char *message
);
DLLEXP
void sys_eval_deinit(
UDF_INIT *initid
);
DLLEXP
char* sys_eval(
UDF_INIT *initid
, UDF_ARGS *args
, char* result
, unsigned long* length
, char *is_null
, char *error
);
#ifdef __cplusplus
}
#endif
/**
* lib_mysqludf_sys_info
*/
my_bool lib_mysqludf_sys_info_init(
UDF_INIT *initid
, UDF_ARGS *args
, char *message
){
my_bool status;
if(args->arg_count!=0){
strcpy(
message
, "No arguments allowed (udf: lib_mysqludf_sys_info)"
);
status = 1;
} else {
status = 0;
}
return status;
}
void lib_mysqludf_sys_info_deinit(
UDF_INIT *initid
){
}
char* lib_mysqludf_sys_info(
UDF_INIT *initid
, UDF_ARGS *args
, char* result
, unsigned long* length
, char *is_null
, char *error
){
strcpy(result,LIBVERSION);
*length = strlen(LIBVERSION);
return result;
}
my_bool sys_get_init(
UDF_INIT *initid
, UDF_ARGS *args
, char *message
){
if(args->arg_count==1
&& args->arg_type[0]==STRING_RESULT){
initid->maybe_null = 1;
return 0;
} else {
strcpy(
message
, "Expected exactly one string type parameter"
);
return 1;
}
}
void sys_get_deinit(
UDF_INIT *initid
){
}
char* sys_get(
UDF_INIT *initid
, UDF_ARGS *args
, char* result
, unsigned long* length
, char *is_null
, char *error
){
char* value = getenv(args->args[0]);
if(value == NULL){
*is_null = 1;
} else {
*length = strlen(value);
}
return value;
}
my_bool sys_set_init(
UDF_INIT *initid
, UDF_ARGS *args
, char *message
){
if(args->arg_count!=2){
strcpy(
message
, "Expected exactly two arguments"
);
return 1;
}
if(args->arg_type[0]!=STRING_RESULT){
strcpy(
message
, "Expected string type for name parameter"
);
return 1;
}
args->arg_type[1]=STRING_RESULT;
if((initid->ptr=malloc(
args->lengths[0]
+ 1
+ args->lengths[1]
+ 1
))==NULL){
strcpy(
message
, "Could not allocate memory"
);
return 1;
}
return 0;
}
void sys_set_deinit(
UDF_INIT *initid
){
if (initid->ptr!=NULL){
free(initid->ptr);
}
}
long long sys_set(
UDF_INIT *initid
, UDF_ARGS *args
, char *is_null
, char *error
){
char *name = initid->ptr;
char *value = name + args->lengths[0] + 1;
memcpy(
name
, args->args[0]
, args->lengths[0]
);
*(name + args->lengths[0]) = '\0';
memcpy(
value
, args->args[1]
, args->lengths[1]
);
*(value + args->lengths[1]) = '\0';
return SETENV(name,value);
}
my_bool sys_exec_init(
UDF_INIT *initid
, UDF_ARGS *args
, char *message
){
unsigned int i=0;
if(args->arg_count == 1
&& args->arg_type[i]==STRING_RESULT){
return 0;
} else {
strcpy(
message
, "Expected exactly one string type parameter"
);
return 1;
}
}
void sys_exec_deinit(
UDF_INIT *initid
){
}
my_ulonglong sys_exec(
UDF_INIT *initid
, UDF_ARGS *args
, char *is_null
, char *error
){
return system(args->args[0]);
}
my_bool sys_eval_init(
UDF_INIT *initid
, UDF_ARGS *args
, char *message
){
unsigned int i=0;
if(args->arg_count == 1
&& args->arg_type[i]==STRING_RESULT){
return 0;
} else {
strcpy(
message
, "Expected exactly one string type parameter"
);
return 1;
}
}
void sys_eval_deinit(
UDF_INIT *initid
){
}
char* sys_eval(
UDF_INIT *initid
, UDF_ARGS *args
, char* result
, unsigned long* length
, char *is_null
, char *error
){
FILE *pipe;
char line[1024];
unsigned long outlen, linelen;
result = malloc(1);
outlen = 0;
pipe = popen(args->args[0], "r");
while (fgets(line, sizeof(line), pipe) != NULL) {
linelen = strlen(line);
result = realloc(result, outlen + linelen);
strncpy(result + outlen, line, linelen);
outlen = outlen + linelen;
}
pclose(pipe);
if (!(*result) || result == NULL) {
*is_null = 1;
} else {
result[outlen] = 0x00;
*length = strlen(result);
}
return result;
}
#endif /* HAVE_DLOPEN */