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child process exit when exec failed! #3

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child process exit when exec failed! #3

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15 changes: 13 additions & 2 deletions wshell.c
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Original file line number Diff line number Diff line change
Expand Up @@ -63,6 +63,7 @@ void proc(void)
while(TRUE)
{
int pipe_fd[2],in_fd,out_fd;
int ret;
type_prompt(prompt);
ParaNum = read_command(&command,parameters,prompt);
if(-1 == ParaNum)
Expand All @@ -89,7 +90,12 @@ void proc(void)
close(fileno(stdin));
dup2(pipe_fd[0], fileno(stdin));
close(pipe_fd[0]);
execvp(info.command2,info.parameters2);
ret = execvp(info.command2,info.parameters2);
if(ret < 0)
{
perror("command error");
exit(-1);
}
}
else
{
Expand Down Expand Up @@ -164,7 +170,12 @@ void proc(void)
dup2(in_fd, fileno(stdin));
close(in_fd);
}
execvp(command,parameters);
ret = execvp(command,parameters);
if(ret < 0)
{
perror("command error");
exit(-1);
}
}
}
free(parameters);
Expand Down