find: implement -amin, -atime, -cmin, and -ctime

function                                             old     new   delta
func_mtime                                           130     180     +50
func_mmin                                            121     171     +50
static.params                                        235     261     +26
parse_params                                        1435    1461     +26
packed_usage                                       34025   34033      +8
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/0 up/down: 160/0)             Total: 160 bytes

Signed-off-by: Ismael Luceno <ismael@iodev.co.uk>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 103 insertions, 9 deletions

diff --git a/findutils/find.c b/findutils/find.c
index f557bb762..9feb44b64 100644
--- a/findutils/find.c
+++ b/findutils/find.c
@@ -74,6 +74,22 @@
 //config:       Allow searching based on the modification time of
 //config:       files, in days.
 //config:
+//config:config FEATURE_FIND_ATIME
+//config:       bool "Enable -atime: access time matching"
+//config:       default y
+//config:       depends on FEATURE_FIND_MTIME
+//config:       help
+//config:       Allow searching based on the access time of
+//config:       files, in days.
+//config:
+//config:config FEATURE_FIND_CTIME
+//config:       bool "Enable -ctime: status change timestamp matching"
+//config:       default y
+//config:       depends on FEATURE_FIND_MTIME
+//config:       help
+//config:       Allow searching based on the status change timestamp of
+//config:       files, in days.
+//config:
 //config:config FEATURE_FIND_MMIN
 //config:       bool "Enable -mmin: modification time matching by minutes"
 //config:       default y
@@ -82,6 +98,22 @@
 //config:       Allow searching based on the modification time of
 //config:       files, in minutes.
 //config:
+//config:config FEATURE_FIND_AMIN
+//config:       bool "Enable -amin: access time matching by minutes"
+//config:       default y
+//config:       depends on FEATURE_FIND_MMIN
+//config:       help
+//config:       Allow searching based on the access time of
+//config:       files, in minutes.
+//config:
+//config:config FEATURE_FIND_CMIN
+//config:       bool "Enable -cmin: status change timestamp matching by minutes"
+//config:       default y
+//config:       depends on FEATURE_FIND_MMIN
+//config:       help
+//config:       Allow searching based on the status change timestamp of
+//config:       files, in minutes.
+//config:
 //config:config FEATURE_FIND_PERM
 //config:       bool "Enable -perm: permissions matching"
 //config:       default y
@@ -296,10 +328,22 @@
 //usage:     "\n        -mtime DAYS     mtime is greater than (+N), less than (-N),"
 //usage:     "\n                        or exactly N days in the past"
 //usage:        )
+//usage:        IF_FEATURE_FIND_ATIME(
+//usage:     "\n        -atime DAYS     atime +N/-N/N days in the past"
+//usage:        )
+//usage:        IF_FEATURE_FIND_CTIME(
+//usage:     "\n        -ctime DAYS     ctime +N/-N/N days in the past"
+//usage:        )
 //usage:        IF_FEATURE_FIND_MMIN(
 //usage:     "\n        -mmin MINS      mtime is greater than (+N), less than (-N),"
 //usage:     "\n                        or exactly N minutes in the past"
 //usage:        )
+//usage:        IF_FEATURE_FIND_AMIN(
+//usage:     "\n        -amin MINS      atime +N/-N/N minutes in the past"
+//usage:        )
+//usage:        IF_FEATURE_FIND_CMIN(
+//usage:     "\n        -cmin MINS      ctime +N/-N/N minutes in the past"
+//usage:        )
 //usage:        IF_FEATURE_FIND_NEWER(
 //usage:     "\n        -newer FILE     mtime is more recent than FILE's"
 //usage:        )
@@ -396,8 +440,8 @@ IF_FEATURE_FIND_PRINT0( ACTS(print0))
 IF_FEATURE_FIND_TYPE(   ACTS(type,  int type_mask;))
 IF_FEATURE_FIND_EXECUTABLE(ACTS(executable))
 IF_FEATURE_FIND_PERM(   ACTS(perm,  char perm_char; mode_t perm_mask;))
-IF_FEATURE_FIND_MTIME(  ACTS(mtime, char mtime_char; unsigned mtime_days;))
-IF_FEATURE_FIND_MMIN(   ACTS(mmin,  char mmin_char; unsigned mmin_mins;))
+IF_FEATURE_FIND_MTIME(  ACTS(mtime, char time_type; char mtime_char; unsigned mtime_days;))
+IF_FEATURE_FIND_MMIN(   ACTS(mmin,  char time_type; char mmin_char; unsigned mmin_mins;))
 IF_FEATURE_FIND_NEWER(  ACTS(newer, time_t newer_mtime;))
 IF_FEATURE_FIND_INUM(   ACTS(inum,  ino_t inode_num;))
 IF_FEATURE_FIND_USER(   ACTS(user,  uid_t uid;))
@@ -619,9 +663,13 @@ ACTF(perm)
 }
 #endif
 
-#if                                             \
-        ENABLE_FEATURE_FIND_MMIN  ||            \
-        ENABLE_FEATURE_FIND_MTIME
+#if 0 \
+ || ENABLE_FEATURE_FIND_AMIN  \
+ || ENABLE_FEATURE_FIND_ATIME \
+ || ENABLE_FEATURE_FIND_CMIN  \
+ || ENABLE_FEATURE_FIND_CTIME \
+ || ENABLE_FEATURE_FIND_MMIN  \
+ || ENABLE_FEATURE_FIND_MTIME
 static int time_cmp(time_t ftime, char time_char, time_t secs, time_t delta)
 {
         time_t file_age = time(NULL) - ftime;
@@ -637,14 +685,32 @@ static int time_cmp(time_t ftime, char time_char, time_t secs, time_t delta)
 #if ENABLE_FEATURE_FIND_MTIME
 ACTF(mtime)
 {
-        return time_cmp(statbuf->st_mtime, ap->mtime_char,
+        time_t t = statbuf->st_mtime;
+# if ENABLE_FEATURE_FIND_ATIME
+        if (ap->time_type == 'a')
+                t = statbuf->st_atime;
+# endif
+# if ENABLE_FEATURE_FIND_CTIME
+        if (ap->time_type == 'c')
+                t = statbuf->st_ctime;
+# endif
+        return time_cmp(t, ap->mtime_char,
                         ap->mtime_days * 24*60*60, 24*60*60);
 }
 #endif
 #if ENABLE_FEATURE_FIND_MMIN
 ACTF(mmin)
 {
-        return time_cmp(statbuf->st_mtime, ap->mmin_char,
+        time_t t = statbuf->st_mtime;
+# if ENABLE_FEATURE_FIND_AMIN
+        if (ap->time_type == 'a')
+                t = statbuf->st_atime;
+# endif
+# if ENABLE_FEATURE_FIND_CMIN
+        if (ap->time_type == 'c')
+                t = statbuf->st_ctime;
+# endif
+        return time_cmp(t, ap->mmin_char,
                         ap->mmin_mins * 60, 60);
 }
 #endif
@@ -1047,7 +1113,11 @@ static action*** parse_params(char **argv)
         IF_FEATURE_FIND_TYPE(   PARM_type      ,)
         IF_FEATURE_FIND_PERM(   PARM_perm      ,)
         IF_FEATURE_FIND_MTIME(  PARM_mtime     ,)
+        IF_FEATURE_FIND_ATIME(  PARM_atime     ,)
+        IF_FEATURE_FIND_CTIME(  PARM_ctime     ,)
         IF_FEATURE_FIND_MMIN(   PARM_mmin      ,)
+        IF_FEATURE_FIND_AMIN(   PARM_amin      ,)
+        IF_FEATURE_FIND_CMIN(   PARM_cmin      ,)
         IF_FEATURE_FIND_NEWER(  PARM_newer     ,)
         IF_FEATURE_FIND_INUM(   PARM_inum      ,)
         IF_FEATURE_FIND_USER(   PARM_user      ,)
@@ -1091,7 +1161,11 @@ static action*** parse_params(char **argv)
         IF_FEATURE_FIND_TYPE(   "-type\0"   )
         IF_FEATURE_FIND_PERM(   "-perm\0"   )
         IF_FEATURE_FIND_MTIME(  "-mtime\0"  )
+        IF_FEATURE_FIND_ATIME(  "-atime\0"  )
+        IF_FEATURE_FIND_CTIME(  "-ctime\0"  )
         IF_FEATURE_FIND_MMIN(   "-mmin\0"   )
+        IF_FEATURE_FIND_AMIN(   "-amin\0"   )
+        IF_FEATURE_FIND_CMIN(   "-cmin\0"   )
         IF_FEATURE_FIND_NEWER(  "-newer\0"  )
         IF_FEATURE_FIND_INUM(   "-inum\0"   )
         IF_FEATURE_FIND_USER(   "-user\0"   )
@@ -1377,19 +1451,39 @@ static action*** parse_params(char **argv)
                 }
 #endif
 #if ENABLE_FEATURE_FIND_MTIME
-                else if (parm == PARM_mtime) {
+                else if (parm == PARM_mtime
+# if ENABLE_FEATURE_FIND_ATIME
+                 || parm == PARM_atime
+# endif
+# if ENABLE_FEATURE_FIND_CTIME
+                 || parm == PARM_ctime
+# endif
+                ) {
                         action_mtime *ap;
                         dbg("%d", __LINE__);
                         ap = ALLOC_ACTION(mtime);
+# if ENABLE_FEATURE_FIND_AMIN || ENABLE_FEATURE_FIND_CMIN
+                        ap->time_type = arg[1];
+# endif
                         ap->mtime_char = arg1[0];
                         ap->mtime_days = xatoul(plus_minus_num(arg1));
                 }
 #endif
 #if ENABLE_FEATURE_FIND_MMIN
-                else if (parm == PARM_mmin) {
+                else if (parm == PARM_mmin
+# if ENABLE_FEATURE_FIND_AMIN
+                 || parm == PARM_amin
+# endif
+# if ENABLE_FEATURE_FIND_CMIN
+                 || parm == PARM_cmin
+# endif
+                ) {
                         action_mmin *ap;
                         dbg("%d", __LINE__);
                         ap = ALLOC_ACTION(mmin);
+# if ENABLE_FEATURE_FIND_AMIN || ENABLE_FEATURE_FIND_CMIN
+                        ap->time_type = arg[1];
+# endif
                         ap->mmin_char = arg1[0];
                         ap->mmin_mins = xatoul(plus_minus_num(arg1));
                 }