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38 lines
1 KiB
Markdown
38 lines
1 KiB
Markdown
## Name
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setresuid, setresgid - set real, effective, and saved user / group ID
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## Synopsis
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```**c++
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#include <unistd.h>
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int setresuid(uid_t, uid_t, uid_t);
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int setresgid(gid_t, gid_t, gid_t);
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```
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## Description
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Sets all of real, effective, and saved user or group ID to the given values.
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An argument of `-1` keeps the corresponding ID unchanged.
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For non-superusers, each of the given values has to be equal to any of the current real, effective, or saved IDs for the call to succeed.
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## Return value
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If the call was set successful, returns 0.
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Otherwise, returns -1 and sets `errno` to describe the error.
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## Errors
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* `EPERM`: At least one of the passed IDs was not equal to the current real, effective, or saved ID, and the user is not superuser.
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## See also
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* [`setuid_overview`(7)](../man7/setuid_overview.md)
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* [`geteuid`(2) / `getegid`(2)](geteuid.md)
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* [`getuid`(2) / `getgid`(2)](getuid.md)
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* [`getresuid`(2) / `getresgid`(2)](getresuid.md)
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* [`seteuid`(2) / `setegid`(2)](seteuid.md)
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* [`setuid`(2) / `setgid`(2)](setuid.md)
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