98c0c5e9e6
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37 lines
967 B
Markdown
37 lines
967 B
Markdown
## Name
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setuid, setgid - set 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 setuid(uid_t);
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int setgid(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 ID.
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For non-superusers, the given ID has to be equal to the current real or effective ID 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`: The new ID is not equal to the real ID or effective ID, and the user is not superuser.
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* `EINVAL`: The new ID is set to invalid value (-1).
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## See also
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* [`setuid_overview`(7)](help://man/7/setuid_overview)
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* [`geteuid`(2) / `getegid`(2)](help://man/2/geteuid)
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* [`getuid`(2) / `getgid`(2)](help://man/2/getuid)
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* [`getresuid`(2) / `getresgid`(2)](help://man/2/getresuid)
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* [`seteuid`(2) / `setegid`(2)](help://man/2/seteuid)
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* [`setresuid`(2) / `setresgid`(2)](help://man/2/setresuid)
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