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One shot guid cache (#988)

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luukvbaal 2021-05-07 19:30:59 +02:00 committed by Arun Prakash Jana
parent 69df38dfd4
commit f4eb89029c
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GPG Key ID: A75979F35C080412
1 changed files with 37 additions and 5 deletions
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42
src/nnn.c
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@ -1014,6 +1014,41 @@ static char *xextension(const char *fname, size_t len)
return xmemrchr((uchar_t *)fname, '.', len);
}
#ifndef NOUG
/* One-shot cache for getpwuid/getgrgid. Returns the cached name if the
* provided uid is the same as the previous uid. Returns xitoa(guid) if
* the guid is not found in the password database. */
static char *getpwname(uid_t uid)
{
static uint_t uidcache = UINT_MAX;
static char *namecache = NULL;
if (uidcache != uid) {
struct passwd *pw = getpwuid(uid);
uidcache = uid;
namecache = pw ? pw->pw_name : NULL;
}
return namecache ? namecache : xitoa(uid);
}
static char *getgrname(gid_t gid)
{
static uint_t gidcache = UINT_MAX;
static char *grpcache = NULL;
if (gidcache != gid) {
struct group *gr = getgrgid(gid);
gidcache = gid;
grpcache = gr ? gr->gr_name : NULL;
}
return grpcache ? grpcache : xitoa(gid);
}
#endif
static inline bool getutil(char *util)
{
return spawn("which", util, NULL, F_NORMAL | F_NOTRACE) == 0;
@ -5629,12 +5664,9 @@ static void statusbar(char *path)
addch(' ');
#ifndef NOUG
if (g_state.uidgid) {
struct passwd *pw = getpwuid(pent->uid);
struct group *gr = getgrgid(pent->gid);
addstr(pw ? pw->pw_name : xitoa(pent->uid));
addstr(getpwname(pent->uid));
addch(':');
addstr(gr ? gr->gr_name : xitoa(pent->gid));
addstr(getgrname(pent->gid));
addch(' ');
}
#endif