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v261
src/shared/specifier.h
106 строк
6 KB
Daan De Meyer
tree-wide: Introduce sd-forward.h and shared-forward.h headers
16 окт 2025, 18:00
16 окт 2025, 18:00
f102bc3
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/* SPDX-License-Identifier: LGPL-2.1-or-later */ #pragma once #include "shared-forward.h" typedef int (*SpecifierCallback)(char specifier, const void *data, const char *root, const void *userdata, char **ret); typedef struct Specifier { const char specifier; const SpecifierCallback lookup; const void *data; } Specifier; int specifier_printf(const char *text, size_t max_length, const Specifier table[], const char *root, const void *userdata, char **ret); int specifier_string(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_real_path(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_real_directory(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_id128(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_uuid(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_uint64(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_machine_id(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_boot_id(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_hostname(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_short_hostname(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_pretty_hostname(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_kernel_release(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_architecture(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_os_id(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_os_version_id(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_os_build_id(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_os_variant_id(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_os_image_id(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_os_image_version(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_group_name(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_group_id(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_user_name(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_user_id(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_user_home(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_user_shell(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_tmp_dir(char specifier, const void *data, const char *root, const void *userdata, char **ret); int specifier_var_tmp_dir(char specifier, const void *data, const char *root, const void *userdata, char **ret); /* Typically, in places where one of the above specifier is to be resolved the other similar ones are to be * resolved, too. Hence let's define common macros for the relevant array entries. * * COMMON_SYSTEM_SPECIFIERS: * %a: the native userspace architecture * %A: the OS image version, according to /etc/os-release * %b: the boot ID of the running system * %B: the OS build ID, according to /etc/os-release * %H: the hostname of the running system * %l: the short hostname of the running system * %q: the 'pretty' hostname as per /etc/machine-info * %m: the machine ID of the running system * %M: the OS image ID, according to /etc/os-release * %o: the OS ID according to /etc/os-release * %v: the kernel version * %w: the OS version ID, according to /etc/os-release * %W: the OS variant ID, according to /etc/os-release * * COMMON_CREDS_SPECIFIERS: * %g: the groupname of the running user * %G: the GID of the running user * %u: the username of the running user * %U: the UID of the running user * * COMMON_TMP_SPECIFIERS: * %T: the temporary directory (e.g. /tmp, or $TMPDIR, $TEMP, $TMP) * %V: the temporary directory for large, persistent stuff (e.g. /var/tmp, or $TMPDIR, $TEMP, $TMP) */ #define COMMON_SYSTEM_SPECIFIERS \ { 'a', specifier_architecture, NULL }, \ { 'A', specifier_os_image_version, NULL }, \ { 'b', specifier_boot_id, NULL }, \ { 'B', specifier_os_build_id, NULL }, \ { 'H', specifier_hostname, NULL }, \ { 'l', specifier_short_hostname, NULL }, \ { 'q', specifier_pretty_hostname, NULL }, \ { 'm', specifier_machine_id, NULL }, \ { 'M', specifier_os_image_id, NULL }, \ { 'o', specifier_os_id, NULL }, \ { 'v', specifier_kernel_release, NULL }, \ { 'w', specifier_os_version_id, NULL }, \ { 'W', specifier_os_variant_id, NULL } #define COMMON_CREDS_SPECIFIERS(scope) \ { 'g', specifier_group_name, INT_TO_PTR(scope) }, \ { 'G', specifier_group_id, INT_TO_PTR(scope) }, \ { 'u', specifier_user_name, INT_TO_PTR(scope) }, \ { 'U', specifier_user_id, INT_TO_PTR(scope) } #define COMMON_TMP_SPECIFIERS \ { 'T', specifier_tmp_dir, NULL }, \ { 'V', specifier_var_tmp_dir, NULL } char* specifier_escape(const char *string); int specifier_escape_strv(char **l, char ***ret); /* A generic specifier table consisting of COMMON_SYSTEM_SPECIFIERS and COMMON_TMP_SPECIFIERS */ extern const Specifier system_and_tmp_specifier_table[];