Go to the first, previous, next, last section, table of contents.
You can search the system user database for information about a
specific user using getpwuid
or getpwnam
. These
functions are declared in `pwd.h'.
getpwuid
.
A null pointer value indicates there is no user in the data base with user ID uid.
getpwuid
in that it returns
information about the user whose user ID is uid. However, it
fills the user supplied structure pointed to by result_buf with
the information instead of using a static buffer. The first
buflen bytes of the additional buffer pointed to by buffer
are used to contain additional information, normally strings which are
pointed to by the elements of the result structure.
If the return value is 0
the pointer returned in result
points to the record which contains the wanted data (i.e., result
contains the value result_buf). If it is nonzero, there is no
user in the data base with user ID uid, or the buffer buffer
is too small to contain all the needed information. In the latter case,
errno is set to ERANGE
.
getpwnam
.
A null pointer return indicates there is no user named name.
getpwnam
in that is returns
information about the user whose user name is name. However, like
getpwuid_r
, it fills the user supplied buffers in
result_buf and buffer with the information instead of using
a static buffer.
The return values are the same as for getpwuid_r
.
Go to the first, previous, next, last section, table of contents.