From e5888a1ffdae813d7575f5fb02275c6bb07e5199 Mon Sep 17 00:00:00 2001 From: Taru Karttunen Date: Wed, 30 Mar 2011 15:46:40 +0300 Subject: Import sources from 2011-03-30 iso image --- sys/src/cmd/touch.c | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100755 sys/src/cmd/touch.c (limited to 'sys/src/cmd/touch.c') diff --git a/sys/src/cmd/touch.c b/sys/src/cmd/touch.c new file mode 100755 index 000000000..8da7e61bd --- /dev/null +++ b/sys/src/cmd/touch.c @@ -0,0 +1,65 @@ +#include +#include + +int touch(int, char *); +ulong now; + +void +usage(void) +{ + fprint(2, "usage: touch [-c] [-t time] files\n"); + exits("usage"); +} + +void +main(int argc, char **argv) +{ + char *t, *s; + int nocreate = 0; + int status = 0; + + now = time(0); + ARGBEGIN{ + case 't': + t = EARGF(usage()); + now = strtoul(t, &s, 0); + if(s == t || *s != '\0') + usage(); + break; + case 'c': + nocreate = 1; + break; + default: + usage(); + }ARGEND + + if(!*argv) + usage(); + while(*argv) + status += touch(nocreate, *argv++); + if(status) + exits("touch"); + exits(0); +} + +touch(int nocreate, char *name) +{ + Dir stbuff; + int fd; + + nulldir(&stbuff); + stbuff.mtime = now; + if(dirwstat(name, &stbuff) >= 0) + return 0; + if(nocreate){ + fprint(2, "touch: %s: cannot wstat: %r\n", name); + return 1; + } + if((fd = create(name, OREAD|OEXCL, 0666)) < 0){ + fprint(2, "touch: %s: cannot create: %r\n", name); + return 1; + } + dirfwstat(fd, &stbuff); + close(fd); + return 0; +} -- cgit v1.2.3