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diff --git a/reference/C/MAN/seteuid.htm b/reference/C/MAN/seteuid.htm new file mode 100644 index 0000000..de43dee --- /dev/null +++ b/reference/C/MAN/seteuid.htm @@ -0,0 +1,98 @@ +<TITLE>setreuid</TITLE> +<body bgcolor="#ffffcc"> +<hr> +<pre> + + + +<h3>SETREUID(2) Linux Programmer's Manual SETREUID(2) +</h3> + +<h3>NAME +</h3> setreuid, seteuid - set real and / or effective user ID + +<h3>SYNOPSIS +</h3> #include <unistd.h> + + int setreuid(uid_t ruid, uid_t euid); + int seteuid(uid_t euid); + +<h3>DESCRIPTION +</h3> setreuid sets real and effective user ID's of the current + process. Un-privileged users may change the real user ID + to the effective user ID and vice-versa. + + Prior to Linux 1.1.37, the saved ID paradigm, when used + with setreuid or seteuid was broken. + + Starting at 1.1.37, it is also possible to set the effec- + tive user ID from the saved user ID. + + Only the super-user may make other changes. + + Supplying a value of -1 for either the real or effective + user ID forces the system to leave that ID unchanged. + + Currently (libc-4.x.x), seteuid(euid) is functionally + equivalent to setreuid(-1, euid). + + If the real user ID is changed or the effective user ID is + set to a value not equal to the previous real user ID, the + saved user ID will be set to the new effective user ID. + +<h3>RETURN VALUE +</h3> On success, zero is returned. On error, -1 is returned, + and errno is set appropriately. + +<h3>ERRORS +</h3> EPERM The current process is not the super-user and + changes other than (i) swapping the effective user + ID with the real user ID or (ii) setting one to + the value of the other or (iii) setting the effec- + tive user ID to the value of the saved user ID was + specified. + +<h3>HISTORY +</h3> The setreuid function call appeared in BSD 4.2. + +<h3>CONFORMING TO +</h3> BSD 4.3 + +</pre> +<hr> +<h3>SEE ALSO +</h3><p> +<a href=getuid.htm>getuid</a>, +<a href=setuid.htm>setuid</a>, +<pre> + + + + + +<h3>Linux 1.1.38 2nd August 1994 1 +</h3> + +
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