47 lines
900 B
C
47 lines
900 B
C
#include <stdio.h>
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/* just get lastest info */
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int _System(const char * cmd, char *pRetMsg, int msg_len)
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{
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FILE * fp;
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char * p = NULL;
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int res = -1;
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if (cmd == NULL || pRetMsg == NULL || msg_len < 0)
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{
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printf("Param Error!\n");
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return -1;
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}
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if ((fp = popen(cmd, "r") ) == NULL)
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{
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printf("Popen Error!\n");
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return -2;
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}
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else
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{
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memset(pRetMsg, 0, msg_len);
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//get lastest result
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while(fgets(pRetMsg, msg_len, fp) != NULL)
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{
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printf("Msg:%s",pRetMsg); //print all info
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}
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if ( (res = pclose(fp)) == -1)
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{
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printf("close popenerror!\n");
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return -3;
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}
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pRetMsg[strlen(pRetMsg)-1] = '\0';
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return 0;
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}
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}
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int main()
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{
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//test cmd
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char *cmd = "lsmod";
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char a8Result[128] = {0};
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int ret = 0;
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ret = _System(cmd, a8Result, sizeof(a8Result));
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printf("ret = %d \na8Result = %s\nlength = %d \n", ret, a8Result, strlen(a8Result));
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return 0;
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} |