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find: Add -readable, -writable & -executable options 

Reviewed by:	jhb, Mina Galić
Pull Request:	https://github.com/freebsd/freebsd-src/pull/1080
This commit is contained in:
Ricardo Branco 2024-01-21 20:53:05 +01:00 committed by John Baldwin
parent 91f78c32be
commit e4b646ce16
4 changed files with 64 additions and 1 deletions
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3
usr.bin/find/extern.h
View File

@ -86,6 +86,7 @@ exec_f f_delete;
exec_f f_depth;
exec_f f_empty;
exec_f f_exec;
exec_f f_executable;
exec_f f_expr;
exec_f f_false;
exec_f f_flags;
@ -107,11 +108,13 @@ exec_f f_print;
exec_f f_print0;
exec_f f_prune;
exec_f f_quit;
exec_f f_readable;
exec_f f_regex;
exec_f f_size;
exec_f f_sparse;
exec_f f_type;
exec_f f_user;
exec_f f_writable;
extern int ftsoptions, ignore_readdir_race, isdepth, isoutput;
extern int issort, isxargs;

20
usr.bin/find/find.1
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@ -28,7 +28,7 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.Dd January 15, 2024
.Dd January 21, 2024
.Dt FIND 1
.Os
.Sh NAME
@ -465,6 +465,12 @@ if at least one invocation of
returns a non-zero exit status,
.Nm
will return a non-zero exit status.
.It Ic -executable
Matches files which are executable by the current user.
This test makes use of the
.Xr access 2
system call, and so can be fooled by NFS servers which do UID mapping (or root-squashing).
This is a GNU find extension.
.It Ic -flags Oo Cm - Ns | Ns Cm + Oc Ns Ar flags , Ns Ar notflags
The flags are specified using symbolic names (see
.Xr chflags 1 ) .
@ -829,6 +835,12 @@ option was specified.
Causes
.Nm
to terminate immediately.
.It Ic -readable
Matches files which are readable by the current user.
This test makes use of the
.Xr access 2
system call, and so can be fooled by NFS servers which do UID mapping (or root-squashing).
This is a GNU find extension.
.It Ic -regex Ar pattern
True if the whole path of the file matches
.Ar pattern
@ -925,6 +937,12 @@ is treated as a user ID.
The same thing as
.Ic -path ,
for GNU find compatibility.
.It Ic -writable
Matches files which are writable by the current user.
This test makes use of the
.Xr access 2
system call, and so can be fooled by NFS servers which do UID mapping (or root-squashing).
This is a GNU find extension.
.El
.Sh OPERATORS
The primaries may be combined using the following operators.

39
usr.bin/find/function.c
View File

@ -1808,3 +1808,42 @@ f_quit(PLAN *plan __unused, FTSENT *entry __unused)
}
/* c_quit == c_simple */
/*
* -readable
*
* File is readable
*/
int
f_readable(PLAN *plan __unused, FTSENT *entry)
{
return (access(entry->fts_path, R_OK) == 0);
}
/* c_readable == c_simple */
/*
* -writable
*
* File is writable
*/
int
f_writable(PLAN *plan __unused, FTSENT *entry)
{
return (access(entry->fts_path, W_OK) == 0);
}
/* c_writable == c_simple */
/*
* -executable
*
* File is executable
*/
int
f_executable(PLAN *plan __unused, FTSENT *entry)
{
return (access(entry->fts_path, X_OK) == 0);
}
/* c_executable == c_simple */

3
usr.bin/find/option.c
View File

@ -75,6 +75,7 @@ static OPTION const options[] = {
{ "-empty", c_empty, f_empty, 0 },
{ "-exec", c_exec, f_exec, 0 },
{ "-execdir", c_exec, f_exec, F_EXECDIR },
{ "-executable", c_simple, f_executable, 0 },
{ "-false", c_simple, f_false, 0 },
#if HAVE_STRUCT_STAT_ST_FLAGS
{ "-flags", c_flags, f_flags, 0 },
@ -149,6 +150,7 @@ static OPTION const options[] = {
// -printf
{ "-prune", c_simple, f_prune, 0 },
{ "-quit", c_simple, f_quit, 0 },
{ "-readable", c_simple, f_readable, 0 },
{ "-regex", c_regex, f_regex, 0 },
{ "-samefile", c_samefile, f_inum, 0 },
{ "-size", c_size, f_size, 0 },
@ -158,6 +160,7 @@ static OPTION const options[] = {
{ "-uid", c_user, f_user, 0 },
{ "-user", c_user, f_user, 0 },
{ "-wholename", c_name, f_path, 0 },
{ "-writable", c_simple, f_writable, 0 },
{ "-xdev", c_xdev, f_always_true, 0 },
// -xtype
};