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23788: add -h option to chown symlinks rather than targets, and change default behavior to do the opposite.

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Clint Adams 2007-08-21 22:59:48 +00:00
parent 10ad489ff0
commit 4cff29774e
3 changed files with 27 additions and 5 deletions
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4
ChangeLog
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@ -1,5 +1,9 @@
2007-08-21 Clint Adams <clint@zsh.org>
* 23788: Doc/Zsh/mod_files.yo, Src/Modules/files.c: add -h option
to chown symlinks rather than targets, and change default behavior
to do the opposite.
* Matthieu Moy: 23785: Completion/Unix/Command/_git: add missing
backslash in _arguments list in git-send-email.

7
Doc/Zsh/mod_files.yo
View file

@ -6,12 +6,12 @@ The tt(zsh/files) module makes some standard commands available as builtins:
startitem()
findex(chgrp)
item(tt(chgrp) [ tt(-Rs) ] var(group) var(filename) ...)(
item(tt(chgrp) [ tt(-hRs) ] var(group) var(filename) ...)(
Changes group of files specified. This is equivalent to tt(chown) with
a var(user-spec) argument of `tt(:)var(group)'.
)
findex(chown)
item(tt(chown) [ tt(-Rs) ] var(user-spec) var(filename) ...)(
item(tt(chown) [ tt(-hRs) ] var(user-spec) var(filename) ...)(
Changes ownership and group of files specified.
The var(user-spec) can be in four forms:
@ -33,6 +33,9 @@ Each of var(user) and var(group) may be either a username (or group name, as
appropriate) or a decimal user ID (group ID). Interpretation as a name
takes precedence, if there is an all-numeric username (or group name).
If the target is a symbolic link, the tt(-h) option causes tt(chown) to set
the ownership of the link instead of its target.
The tt(-R) option causes tt(chown) to recursively descend into directories,
changing the ownership of all files in the directory after
changing the ownership of the directory itself.

21
Src/Modules/files.c
View file

@ -593,6 +593,19 @@ chown_dochown(char *arg, char *rp, UNUSED(struct stat const *sp), void *magic)
{
struct chownmagic *chm = magic;
if(chown(rp, chm->uid, chm->gid)) {
zwarnnam(chm->nam, "%s: %e", arg, errno);
return 1;
}
return 0;
}
/**/
static int
chown_dolchown(char *arg, char *rp, UNUSED(struct stat const *sp), void *magic)
{
struct chownmagic *chm = magic;
if(lchown(rp, chm->uid, chm->gid)) {
zwarnnam(chm->nam, "%s: %e", arg, errno);
return 1;
@ -600,6 +613,7 @@ chown_dochown(char *arg, char *rp, UNUSED(struct stat const *sp), void *magic)
return 0;
}
/**/
static unsigned long getnumeric(char *p, int *errp)
{
@ -684,7 +698,8 @@ bin_chown(char *nam, char **args, Options ops, int func)
}
free(uspec);
return recursivecmd(nam, 0, OPT_ISSET(ops,'R'), OPT_ISSET(ops,'s'),
args + 1, chown_dochown, recurse_donothing, chown_dochown, &chm);
args + 1, OPT_ISSET(ops, 'h') ? chown_dolchown : chown_dochown, recurse_donothing,
OPT_ISSET(ops, 'h') ? chown_dolchown : chown_dochown, &chm);
}
/* module paraphernalia */
@ -696,8 +711,8 @@ bin_chown(char *nam, char **args, Options ops, int func)
#endif
static struct builtin bintab[] = {
BUILTIN("chgrp", 0, bin_chown, 2, -1, BIN_CHGRP, "Rs", NULL),
BUILTIN("chown", 0, bin_chown, 2, -1, BIN_CHOWN, "Rs", NULL),
BUILTIN("chgrp", 0, bin_chown, 2, -1, BIN_CHGRP, "hRs", NULL),
BUILTIN("chown", 0, bin_chown, 2, -1, BIN_CHOWN, "hRs", NULL),
BUILTIN("ln", 0, bin_ln, 1, -1, BIN_LN, LN_OPTS, NULL),
BUILTIN("mkdir", 0, bin_mkdir, 1, -1, 0, "pm:", NULL),
BUILTIN("mv", 0, bin_ln, 2, -1, BIN_MV, "fi", NULL),