Re: Why no SIGINFO?

[Daniel Loffgren <miyokojiro%gmail.com@localhost>]

Here it is. I just put in from, to, bytes done, original size (total bytes) and 
percentage. I'll write similar functionality for mv, too.

Index: cp.c
===================================================================
RCS file: /cvsroot/src/bin/cp/cp.c,v
retrieving revision 1.57
diff -u -r1.57 cp.c
--- cp.c        18 Aug 2011 08:11:58 -0000      1.57
+++ cp.c        4 Jan 2012 05:42:59 -0000
@@ -74,6 +74,7 @@
#include <stdio.h>
#include <string.h>
#include <unistd.h>
+#include <signal.h>

#include "extern.h"

@@ -88,6 +89,7 @@
uid_t myuid;
int Hflag, Lflag, Rflag, Pflag, fflag, iflag, lflag, pflag, rflag, vflag, Nflag;
mode_t myumask;
+sig_atomic_t pinfo;

enum op { FILE_TO_FILE, FILE_TO_DIR, DIR_TO_DNE };

@@ -210,6 +212,9 @@
        /* Set end of argument list for fts(3). */
        argv[argc] = NULL;     
        
+       pinfo = 0;
+       (void)signal(SIGINFO, progress);
+       
        /*
         * Cp has two distinct cases:
         *
Index: extern.h
===================================================================
RCS file: /cvsroot/src/bin/cp/extern.h,v
retrieving revision 1.16
diff -u -r1.16 extern.h
--- extern.h    6 Feb 2011 12:37:49 -0000       1.16
+++ extern.h    4 Jan 2012 05:42:59 -0000
@@ -44,6 +44,7 @@
extern uid_t myuid;
extern int Rflag, rflag, Hflag, Lflag, Pflag, fflag, iflag, lflag, pflag, Nflag;
extern mode_t myumask;
+extern sig_atomic_t pinfo;

#include <sys/cdefs.h>

@@ -54,6 +55,7 @@
int     copy_special(struct stat *, int);
int     set_utimes(const char *, struct stat *);
int     setfile(struct stat *, int);
+void progress(int unused);
void    usage(void) __attribute__((__noreturn__));
__END_DECLS

Index: utils.c
===================================================================
RCS file: /cvsroot/src/bin/cp/utils.c,v
retrieving revision 1.40
diff -u -r1.40 utils.c
--- utils.c     3 Aug 2011 04:11:15 -0000       1.40
+++ utils.c     4 Jan 2012 05:42:59 -0000
@@ -81,6 +81,8 @@
        struct stat to_stat, *fs;
        int ch, checkch, from_fd, rcount, rval, to_fd, tolnk, wcount;
        char *p;
+       char infobuf[160];
+       size_t ptotal = 0;
        
        if ((from_fd = open(entp->fts_path, O_RDONLY, 0)) == -1) {
                warn("%s", entp->fts_path);
@@ -220,6 +222,15 @@
                                        rval = 1;
                                        break;
                                }
+                               ptotal += wcount;
+                               if (pinfo) {
+                                       snprintf(infobuf, 160,
+                                       "%s => %s %zu/%zu bytes %d%% written\n",
+                                       entp->fts_path, to.p_path, 
(size_t)ptotal,
+                                       (size_t)fs->st_size, (int)(100.0 * 
ptotal / fs->st_size));
+                                       (void)write(STDERR_FILENO, infobuf, 
strlen(infobuf));
+                                       pinfo = 0;
+                               }
                        }
                        if (rcount < 0) {
                                warn("%s", entp->fts_path);
@@ -381,6 +392,12 @@
}

void
+progress(int unused)
+{
+       pinfo = 1;
+}      
+
+void
usage(void)
{
        (void)fprintf(stderr,