We need xsetuid() and xsetgid() because per-user process resource limits can
prevent a process from switching to a user that has too many processes, and when that happens WE'RE STILL ROOT. See http://lwn.net/Articles/190331/
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@ -185,6 +185,8 @@ extern void utoa_to_buf(unsigned n, char *buf, unsigned buflen);
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extern char *utoa(unsigned n);
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extern void itoa_to_buf(int n, char *buf, unsigned buflen);
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extern char *itoa(int n);
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extern void xsetgid(gid_t gid);
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extern void xsetuid(uid_t uid);
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#define BB_GETOPT_ERROR 0x80000000UL
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extern const char *bb_opt_complementally;
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@ -282,3 +282,15 @@ char *itoa(int n)
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return local_buf;
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}
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#endif
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#ifdef L_setuid
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void xsetgid(gid_t gid)
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{
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if (setgid(gid)) bb_error_msg_and_die("setgid");
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}
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void xsetuid(uid_t uid)
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{
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if (setuid(uid)) bb_error_msg_and_die("setuid");
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}
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#endif
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