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Add canon_path(), a realpath() wrapper that performs caching.

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This also adds a new user_cmnd_dir variable that stores the
canonicalized parent directory of the command to be run.
This commit is contained in:
Todd C. Miller
2023-02-21 13:24:33 -07:00
parent 0443d14578
commit 0ef5373678
5 changed files with 250 additions and 4 deletions
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7
plugins/sudoers/sudoers.h
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@@ -102,6 +102,7 @@ struct sudo_user {
char *cmnd;
char *cmnd_args;
char *cmnd_base;
char *cmnd_dir;
char *cmnd_list;
char *cmnd_safe;
char *cmnd_saved;
@@ -239,6 +240,7 @@ struct sudo_user {
#define user_ttypath (sudo_user.ttypath)
#define user_cwd (sudo_user.cwd)
#define user_cmnd (sudo_user.cmnd)
#define user_cmnd_dir (sudo_user.cmnd_dir)
#define user_args (sudo_user.cmnd_args)
#define user_base (sudo_user.cmnd_base)
#define user_stat (sudo_user.cmnd_stat)
@@ -476,6 +478,11 @@ bool sudoers_gc_remove(enum sudoers_gc_types type, void *ptr);
void sudoers_gc_init(void);
void sudoers_gc_run(void);
/* canon_path.c */
char *canon_path(const char *inpath);
void canon_path_free(char *resolved);
void canon_path_free_cache(void);
/* strlcpy_unesc.c */
size_t strlcpy_unescape(char *dst, const char *src, size_t size);