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touch: posix open

This commit is contained in:
Connor Lane Smith 2011-06-18 06:43:10 +01:00
parent 8ec404cdec
commit 444de72fd3
2 changed files with 17 additions and 13 deletions
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3
kill.1
View File

@ -25,4 +25,5 @@ lists available signals. If a
.I signum
is given, only the corresponding signal name will be printed.
.SH SEE ALSO
.IR kill (2)
.IR kill (2),
.IR signal (7)

27
touch.c
View File

@ -43,17 +43,20 @@ touch(const char *str)
struct stat st;
struct utimbuf ut;
if(stat(str, &st) == -1) {
if(errno != ENOENT)
eprintf("stat %s:", str);
if(cflag)
return;
if((fd = creat(str, O_EXCL|S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)) < 0)
eprintf("creat %s:", str);
close(fd);
if(stat(str, &st) == 0) {
ut.actime = st.st_atime;
ut.modtime = t;
if(utime(str, &ut) == -1)
eprintf("utime %s:", str);
return;
}
ut.actime = st.st_atime;
ut.modtime = t;
if(utime(str, &ut) == -1)
eprintf("utime %s:", str);
else if(errno != ENOENT)
eprintf("stat %s:", str);
else if(cflag)
return;
if((fd = open(str, O_CREAT|O_EXCL,
S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)) == -1)
eprintf("open %s:", str);
close(fd);
touch(str);
}