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#+build linux, darwin, netbsd, openbsd, freebsd, haiku
package posix
import "core:c"
when ODIN_OS == .Darwin {
foreign import lib "system:System"
} else {
foreign import lib "system:c"
}
// grp.h - group structure
foreign lib {
/*
Closes the group database.
Checking status would be done by setting errno to 0, calling this, and checking errno.
[[ More; https://pubs.opengroup.org/onlinepubs/9699919799/functions/endgrent.html ]]
*/
endgrent :: proc() ---
/*
Rewinds the group database so getgrent() returns the first entry again.
Checking status would be done by setting errno to 0, calling this, and checking errno.
[[ More; https://pubs.opengroup.org/onlinepubs/9699919799/functions/endgrent.html ]]
*/
setgrent :: proc() ---
/*
Returns a pointer to an entry of the group database.
Opens the group database if it isn't.
Returns: nil on failure (setting errno) or EOF (not setting errno), the entry otherwise
[[ More; https://pubs.opengroup.org/onlinepubs/9699919799/functions/endgrent.html ]]
*/
getgrent :: proc() -> ^group ---
/*
Searches for an entry with a matching gid in the group database.
Returns: nil (setting errno) on failure, a pointer to the entry on success
[[ More; https://pubs.opengroup.org/onlinepubs/9699919799/functions/getgrgid.html ]]
*/
getgrgid :: proc(gid: gid_t) -> ^group ---
/*
Searches for an entry with a matching gid in the group database.
Updates grp with the matching entry and stores it (or a nil pointer (setting errno)) into result.
Strings are allocated into the given buffer, you can call `sysconf(._GETGR_R_SIZE_MAX)` for an appropriate size.
[[ More; https://pubs.opengroup.org/onlinepubs/9699919799/functions/getgrgid.html ]]
*/
getgrgid_r :: proc(gid: gid_t, grp: ^group, buffer: [^]byte, bufsize: c.size_t, result: ^^group) -> Errno ---
/*
Searches for an entry with a matching gid in the group database.
Returns: nil (setting errno) on failure, a pointer to the entry on success
[[ More; https://pubs.opengroup.org/onlinepubs/9699919799/functions/getgrnam.html ]]
*/
getgrnam :: proc(name: cstring) -> ^group ---
/*
Searches for an entry with a matching gid in the group database.
Updates grp with the matching entry and stores it (or a nil pointer (setting errno)) into result.
Strings are allocated into the given buffer, you can call `sysconf(._GETGR_R_SIZE_MAX)` for an appropriate size.
Example:
length := posix.sysconf(._GETGR_R_SIZE_MAX)
if length == -1 {
length = 1024
}
result: posix.group
resultp: ^posix.group
e: posix.Errno
buffer: [dynamic]byte
defer delete(buffer)
for {
mem_err := resize(&buffer, length)
assert(mem_err == nil)
e = posix.getgrnam_r("nobody", &result, raw_data(buffer), len(buffer), &resultp)
if e != .ERANGE {
break
}
length *= 2
assert(length > 0)
}
if e != .NONE {
panic(string(posix.strerror(e)))
}
fmt.println(result)
[[ More; https://pubs.opengroup.org/onlinepubs/9699919799/functions/getgrnam.html ]]
*/
getgrnam_r :: proc(name: cstring, grp: ^group, buffer: [^]byte, bufsize: c.size_t, result: ^^group) -> Errno ---
}
when ODIN_OS == .Darwin || ODIN_OS == .FreeBSD || ODIN_OS == .NetBSD || ODIN_OS == .OpenBSD || ODIN_OS == .Haiku || ODIN_OS == .Linux {
gid_t :: distinct c.uint32_t
group :: struct {
gr_name: cstring, /* [PSX] group name */
gr_passwd: cstring, /* group password */
gr_gid: gid_t, /* [PSX] group id */
gr_mem: [^]cstring, /* [PSX] group members */
}
}
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