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*: unify concurrent-safe update of /etc/{passwd,group,[g]shadow}

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by Tito (farmatito AT tiscali.it)

function                                             old     new   delta
update_passwd                                        743    1171    +428
bb_perror_nomsg                                        -       9      +9
find_main                                            436     444      +8
passwd_main                                         1023    1027      +4
nameval                                              202     206      +4
chpasswd_main                                        315     319      +4
bb__parsespent                                       119     117      -2
adduser_main                                         654     650      -4
addgroup_main                                        345     341      -4
sv_main                                             1228    1222      -6
deluser_main                                         173     160     -13
bb_internal_putpwent                                  69       -     -69
add_user_to_group                                    231       -    -231
del_line_matching                                    460      31    -429
------------------------------------------------------------------------------
(add/remove: 1/2 grow/shrink: 5/6 up/down: 457/-758)         Total: -301 bytes
This commit is contained in:
Denis Vlasenko
2009-04-14 00:51:05 +00:00
parent f2b39e088d
commit 829bbd3b57
8 changed files with 209 additions and 228 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
include/libbb.h
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@ -1142,9 +1142,16 @@ extern int obscure(const char *old, const char *newval, const struct passwd *pwd
* (otherwise we risk having same salt generated)
*/
extern int crypt_make_salt(char *p, int cnt, int rnd) FAST_FUNC;
/* Returns number of lines changed, or -1 on error */
extern int update_passwd(const char *filename, const char *username,
const char *new_pw) FAST_FUNC;
#if !(ENABLE_FEATURE_ADDUSER_TO_GROUP || ENABLE_FEATURE_DEL_USER_FROM_GROUP)
#define update_passwd(filename, username, data, member) \
update_passwd(filename, username, data)
#endif
extern int update_passwd(const char *filename,
const char *username,
const char *data,
const char *member) FAST_FUNC;
int index_in_str_array(const char *const string_array[], const char *key) FAST_FUNC;
int index_in_strings(const char *strings, const char *key) FAST_FUNC;