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e97c85bb80
. Support multiple namespaces in the installed environment block; . Add option --site (-S) to specify a particular namespace when operating on the installed environment block; . Add option --effective-site (-E) to specify a particular namespace. When using in a combination with the option -l (--list), it displays zIPL environment that would take place if the specified namespace was activated at boot time; . Modify set/unset/reset/list operations over the installed environment block in the case when the option --site is specified Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Eduard Shishkin <edward6@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
58 lines
2.2 KiB
C
58 lines
2.2 KiB
C
/*
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* s390-tools/zipl/include/bootmap.h
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* Functions to handle environment block.
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*
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* Copyright IBM Corp. 2020
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*
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* s390-tools is free software; you can redistribute it and/or modify
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* it under the terms of the MIT license. See LICENSE for details.
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*
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*/
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#include "boot/s390.h" /* for PAGE_SIZE */
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#define ZIPL_ENVBLK_SIGNATURE "# zIPL Environment Block\n"
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#define ENVBLK_DEFAULT_IMPORT_SOURCE "/etc/ziplenv"
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/*
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* The following limit can be increased. It requires modifications
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* of the code, which is responsible for handling environment in
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* stage3, which will increase its memory footprint.
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*/
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#define ENVBLK_MAX_LINES (PAGE_SIZE / 8 /* sizeof(struct env_hash_entry */)
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#define ENVBLK_MAX_IMPORT_SIZE(envblk_size) \
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(envblk_size - sizeof(ZIPL_ENVBLK_SIGNATURE) + 1)
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/* get name by prefixed name PNAME and by logical prefix P */
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static inline const char *get_name(const char *p, const char *pname)
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{
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return p ? pname + strlen(p) : pname;
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}
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/* get name length by prefixed name PNAME and by logical prefix P */
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static inline size_t get_name_len(const char *p, const char *pname)
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{
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return p ? strlen(pname) - strlen(p) : strlen(pname);
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}
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int envblk_offset_get(int fd, off_t *off);
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int envblk_offset_set(int fd, off_t off);
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int envblk_size_get(int fd, int *size);
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int envblk_check_name(const char *name, int len);
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int envblk_import(char *from, char *to, int size);
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char *envblk_next_line(char *s, const char *end);
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int envblk_scan(char *envblk, unsigned int envblk_size,
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int (*actor)(char *name, void *data), void *data);
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void envblk_print(char *envblk, unsigned int envblk_size);
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void envblk_create_blank(char *envblk, int envblk_len);
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void envblk_blank(char *envblk, int envblk_len);
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int envblk_list_site(char *envblk, unsigned int envblk_size, int site_id);
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int envblk_list_effective_site(char *envblk, unsigned int envblk_size,
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int site_id);
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int envblk_list_all(char *envblk, unsigned int envblk_size, int indent);
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int envblk_set(char *envblk, unsigned int envblk_size, const char *name,
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const char *new_val);
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int envblk_unset(char *envblk, int envblk_len, const char *pname,
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const char *site_id);
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int envblk_remove_namespace(char *envblk, unsigned int envblk_size,
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const char *site_id);
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