POSIX_SYSTEM_DATABASE

POSIX System Database option group. More...

Data Structures
struct	group
	POSIX group database entry. More...
struct	passwd
	POSIX password database entry. More...

Functions
void	endgrent (void)
	Close the group database.
struct group *	getgrent (void)
	Read the next group entry from the group database.
struct group *	getgrgid (gid_t gid)
	Look up a group entry by group ID.
struct group *	getgrnam (const char *name)
	Look up a group entry by name.
void	setgrent (void)
	Rewind to the beginning of the group database.
void	endpwent (void)
	Close the password database.
struct passwd *	getpwent (void)
	Read the next password entry from the password database.
struct passwd *	getpwnam (const char *name)
	Look up a password entry by name.
struct passwd *	getpwuid (uid_t uid)
	Look up a password entry by user ID.
void	setpwent (void)
	Rewind to the beginning of the password database.

Detailed Description

POSIX System Database option group.

Covers getpwnam(), getpwuid(), getgrnam(), and getgrgid().

Function Documentation

endgrent()

void endgrent

(

void

)

Close the group database.

endpwent()

void endpwent

(

void

)

Close the password database.

getgrent()

struct group * getgrent

(

void

)

Read the next group entry from the group database.

getgrgid()

struct group * getgrgid

(

gid_t

gid

)

Look up a group entry by group ID.

Parameters

gid	Group ID to search for.

Returns

Pointer to a static group structure, or NULL on failure or if not found.

See also

https://pubs.opengroup.org/onlinepubs/9699919799/functions/getgrgid.html

getgrnam()

struct group * getgrnam

(

const char *

name

)

Look up a group entry by name.

Parameters

name	Group name to search for.

Returns

Pointer to a static group structure, or NULL on failure or if not found.

See also

https://pubs.opengroup.org/onlinepubs/9699919799/functions/getgrnam.html

getpwent()

struct passwd * getpwent

(

void

)

Read the next password entry from the password database.

getpwnam()

struct passwd * getpwnam

(

const char *

name

)

Look up a password entry by name.

Parameters

name	User login name to search for.

Returns

Pointer to a static passwd structure, or NULL on failure or if not found.

See also

https://pubs.opengroup.org/onlinepubs/9699919799/functions/getpwnam.html

getpwuid()

struct passwd * getpwuid

(

uid_t

uid

)

Look up a password entry by user ID.

Parameters

uid	Numerical user ID to search for.

Returns

Pointer to a static passwd structure, or NULL on failure or if not found.

See also

https://pubs.opengroup.org/onlinepubs/9699919799/functions/getpwuid.html

setgrent()

void setgrent

(

void

)

Rewind to the beginning of the group database.

setpwent()

void setpwent

(

void

)

Rewind to the beginning of the password database.