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fgetpwent(3) — Linux manual page

NAME \|LIBRARY \|SYNOPSIS \|DESCRIPTION \|RETURN VALUE \|ERRORS \|FILES \|ATTRIBUTES \|STANDARDS \|HISTORY \|SEE ALSO \|COLOPHON

fgetpwent(3)             Library Functions Manualfgetpwent(3)

NAME top

       fgetpwent - get password file entry

LIBRARY top

       Standard C library (libc,-lc)

SYNOPSIS top

#include <stdio.h>#include <sys/types.h>#include <pwd.h>struct passwd *fgetpwent(FILE *stream);   Feature Test Macro Requirements for glibc (seefeature_test_macros(7)):fgetpwent():           Since glibc 2.19:               _DEFAULT_SOURCE           glibc 2.19 and earlier:               _SVID_SOURCE

DESCRIPTION top

       Thefgetpwent() function returns a pointer to a structure       containing the broken out fields of a line in the filestream.       The first time it is called it returns the first entry;       thereafter, it returns successive entries.  The file referred to       bystream must have the same format as/etc/passwd (seepasswd(5)).       Thepasswd 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 top

       Thefgetpwent() function returns a pointer to apasswd structure,       or NULL if there are no more entries or an error occurs.  In the       event of an error,errno is set to indicate the error.

ERRORS top

ENOMEMInsufficient memory to allocatepasswd structure.

FILES top

/etc/passwd              password database file

ATTRIBUTES top

       For an explanation of the terms used in this section, seeattributes(7).       ┌─────────────────────┬───────────────┬──────────────────────────┐       │Interface│Attribute│Value│       ├─────────────────────┼───────────────┼──────────────────────────┤       │fgetpwent()         │ Thread safety │ MT-Unsafe race:fgetpwent │       └─────────────────────┴───────────────┴──────────────────────────┘

STANDARDS top

       None.

HISTORY top

       SVr4.

COLOPHON top

       This page is part of theman-pages (Linux kernel and C library       user-space interface documentation) project.  Information about       the project can be found at        ⟨https://www.kernel.org/doc/man-pages/⟩.  If you have a bug report       for this manual page, see       ⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.       This page was obtained from the tarball man-pages-6.15.tar.gz       fetched from       ⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on       2025-08-11.  If you discover any rendering problems in this HTML       version of the page, or you believe there is a better or more up-       to-date source for the page, or you have corrections or       improvements to the information in this COLOPHON (which isnot       part of the original manual page), send a mail to       man-pages@man7.orgLinux man-pages 6.15            2025-05-17fgetpwent(3)

Pages that refer to this page:getpw(3), getpwent(3), getpwent_r(3), getpwnam(3), putpwent(3)

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