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getpw(3) [v7 man page]

GETPW(3)						     Library Functions Manual							  GETPW(3)

NAME
getpw - get name from UID SYNOPSIS
getpw(uid, buf) char *buf; DESCRIPTION
Getpw searches the password file for the (numerical) uid, and fills in buf with the corresponding line; it returns non-zero if uid could not be found. The line is null-terminated. FILES
/etc/passwd SEE ALSO
getpwent(3), passwd(5) DIAGNOSTICS
Non-zero return on error. deprecated GETPW(3)

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GETPW(3)						     Linux Programmer's Manual							  GETPW(3)

NAME
getpw - Re-construct password line entry SYNOPSIS
#define _GNU_SOURCE #include <sys/types.h> #include <pwd.h> int getpw(uid_t uid, char *buf); DESCRIPTION
The getpw() function reconstructs the password line entry for the given user ID uid in the buffer buf. The returned buffer contains a line of format name:passwd:uid:gid:gecos:dir:shell The passwd structure is defined in <pwd.h> as follows: struct passwd { char *pw_name; /* username */ char *pw_passwd; /* user password */ uid_t pw_uid; /* user ID */ gid_t pw_gid; /* group ID */ char *pw_gecos; /* real name */ char *pw_dir; /* home directory */ char *pw_shell; /* shell program */ }; RETURN VALUE
The getpw() function returns 0 on success; on error, it returns -1, and errno is set to indicate the error. ERRORS
EINVAL buf is NULL. ENOENT No user corresponding to uid. ENOMEM Insufficient memory to allocate passwd structure. FILES
/etc/passwd password database file CONFORMING TO
SVr2. BUGS
The getpw() function is dangerous as it may overflow the provided buffer buf. It is obsoleted by getpwuid(3). SEE ALSO
endpwent(3), fgetpwent(3), getpwent(3), getpwnam(3), getpwuid(3), putpwent(3), setpwent(3), passwd(5) COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. GNU
2007-12-12 GETPW(3)
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