diff options
| author | Charlie Shepherd <masterdriverz@gentoo.org> | 2007-11-10 10:03:01 +0000 |
|---|---|---|
| committer | Charlie Shepherd <masterdriverz@gentoo.org> | 2007-11-10 10:03:01 +0000 |
| commit | 627dc77bb6749dbb2cb41d2bbca0c8e41c7504ca (patch) | |
| tree | 7f3109dbd4b0b16e535e2933628f18c8e7424134 /toys/touch.c | |
| parent | ded91bd8208b1d8a1c7b145f3ee5741b6ad57591 (diff) | |
| download | toybox-627dc77bb6749dbb2cb41d2bbca0c8e41c7504ca.tar.gz | |
Add an option to let touch extend or truncate a file and rename the err label to time_error to reduce confusion.
Diffstat (limited to 'toys/touch.c')
| -rw-r--r-- | toys/touch.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/toys/touch.c b/toys/touch.c index b4e3d971..514ee1be 100644 --- a/toys/touch.c +++ b/toys/touch.c @@ -5,7 +5,9 @@ * Copyright (C) 2007 Charlie Shepherd <masterdriverz@gentoo.org> */ -#define _XOPEN_SOURCE +#define _XOPEN_SOURCE 600 +#include <unistd.h> +#include <sys/types.h> #include <sys/stat.h> #include <utime.h> #include <time.h> @@ -16,17 +18,24 @@ #define ATIME 0x04 #define REFERENCE 0x08 #define TIME 0x10 +#define LENGTH 0x20 int touch_main(void) { char *arg; int i, set_a, set_m, create; time_t curr_a, curr_m; + off_t length; set_a = !!(toys.optflags & ATIME); set_m = !!(toys.optflags & MTIME); create = !(toys.optflags & NO_CREATE); + if (toys.optflags & LENGTH) + length = toy.touch.length; + else + length = -1; + if (toys.optflags & REFERENCE) { struct stat sb; if (toys.optflags & TIME) @@ -40,13 +49,13 @@ int touch_main(void) char *c; curr = time(NULL); if (!localtime_r(&curr, &t)) - goto err; + goto time_error; c = strptime(toy.touch.time, "%m%d%H%M", &t); if (!c || *c) - goto err; + goto time_error; curr_a = curr_m = mktime(&t); if (curr_a == -1) -err: +time_error: error_exit("Error converting time %s to internal format", toy.touch.time); } else { @@ -77,7 +86,11 @@ err: buf.actime = sb.st_atime; } + if (length != -1) + if (truncate(arg, length)) + goto error; if (utime(arg, &buf)) +error: perror_exit(arg); } |