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0648a547da
* 初步实现Cred * 添加seteuid和setegid * 添加cred测试程序 * 修改Cred::fscmp返回结果为CredFsCmp枚举 * 完善root用户相关信息
42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
#include <sys/types.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <assert.h>
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int main()
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{
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printf("Current uid: %d, euid: %d, gid: %d, egid: %d\n\n", getuid(), geteuid(), getgid(), getegid());
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// 测试uid
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printf("Set uid 1000\n");
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setuid(1000);
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int uid = getuid();
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assert(uid == 1000);
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printf("Current uid:%d\n\n", uid);
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// 测试gid
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printf("Set gid 1000\n");
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setgid(1000);
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int gid = getgid();
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assert(gid == 1000);
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printf("Current gid:%d\n\n", gid);
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// 测试euid
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printf("Setg euid 1000\n");
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seteuid(1000);
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int euid = geteuid();
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assert(euid == 1000);
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printf("Current euid:%d\n\n", euid);
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// 测试egid
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printf("Set egid 1000\n");
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setegid(1000);
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int egid = getegid();
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assert(egid == 1000);
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printf("Current egid:%d\n\n", egid);
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// 测试uid在非root用户下无法修改
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printf("Try to setuid for non_root.\n");
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assert(setuid(0) < 0); // 非root用户无法修改uid
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printf("Current uid: %d, euid: %d, gid: %d, egid: %d\n", getuid(), geteuid(), getgid(), getegid());
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} |