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Swap "source"/"target" where appropriate, to match documentation.

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This commit is contained in:
ru 2007-11-17 20:24:58 +00:00
parent 26544f3861
commit 4a831eed37
1 changed files with 38 additions and 38 deletions
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76
bin/ln/ln.c
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@ -69,7 +69,7 @@ int
main(int argc, char *argv[])
{
struct stat sb;
char *p, *sourcedir;
char *p, *targetdir;
int ch, exitval;
/*
@ -134,34 +134,34 @@ main(int argc, char *argv[])
case 0:
usage();
/* NOTREACHED */
case 1: /* ln target */
case 1: /* ln source */
exit(linkit(argv[0], ".", 1));
case 2: /* ln target source */
case 2: /* ln source target */
exit(linkit(argv[0], argv[1], 0));
default:
;
}
/* ln target1 target2 directory */
sourcedir = argv[argc - 1];
if (hflag && lstat(sourcedir, &sb) == 0 && S_ISLNK(sb.st_mode)) {
/* ln source1 source2 directory */
targetdir = argv[argc - 1];
if (hflag && lstat(targetdir, &sb) == 0 && S_ISLNK(sb.st_mode)) {
/*
* We were asked not to follow symlinks, but found one at
* the target--simulate "not a directory" error
*/
errno = ENOTDIR;
err(1, "%s", sourcedir);
err(1, "%s", targetdir);
}
if (stat(sourcedir, &sb))
err(1, "%s", sourcedir);
if (stat(targetdir, &sb))
err(1, "%s", targetdir);
if (!S_ISDIR(sb.st_mode))
usage();
for (exitval = 0; *argv != sourcedir; ++argv)
exitval |= linkit(*argv, sourcedir, 1);
for (exitval = 0; *argv != targetdir; ++argv)
exitval |= linkit(*argv, targetdir, 1);
exit(exitval);
}
int
linkit(const char *target, const char *source, int isdir)
linkit(const char *source, const char *target, int isdir)
{
struct stat sb;
const char *p;
@ -169,57 +169,57 @@ linkit(const char *target, const char *source, int isdir)
char path[PATH_MAX];
if (!sflag) {
/* If target doesn't exist, quit now. */
if (stat(target, &sb)) {
warn("%s", target);
/* If source doesn't exist, quit now. */
if (stat(source, &sb)) {
warn("%s", source);
return (1);
}
/* Only symbolic links to directories. */
if (S_ISDIR(sb.st_mode)) {
errno = EISDIR;
warn("%s", target);
warn("%s", source);
return (1);
}
}
/*
* If the source is a directory (and not a symlink if hflag),
* append the target's name.
* If the target is a directory (and not a symlink if hflag),
* append the source's name.
*/
if (isdir ||
(lstat(source, &sb) == 0 && S_ISDIR(sb.st_mode)) ||
(!hflag && stat(source, &sb) == 0 && S_ISDIR(sb.st_mode))) {
if ((p = strrchr(target, '/')) == NULL)
p = target;
(lstat(target, &sb) == 0 && S_ISDIR(sb.st_mode)) ||
(!hflag && stat(target, &sb) == 0 && S_ISDIR(sb.st_mode))) {
if ((p = strrchr(source, '/')) == NULL)
p = source;
else
++p;
if (snprintf(path, sizeof(path), "%s/%s", source, p) >=
if (snprintf(path, sizeof(path), "%s/%s", target, p) >=
(ssize_t)sizeof(path)) {
errno = ENAMETOOLONG;
warn("%s", target);
warn("%s", source);
return (1);
}
source = path;
target = path;
}
exists = !lstat(source, &sb);
exists = !lstat(target, &sb);
/*
* If the file exists, then unlink it forcibly if -f was specified
* and interactively if -i was specified.
*/
if (fflag && exists) {
if (Fflag && S_ISDIR(sb.st_mode)) {
if (rmdir(source)) {
warn("%s", source);
if (rmdir(target)) {
warn("%s", target);
return (1);
}
} else if (unlink(source)) {
warn("%s", source);
} else if (unlink(target)) {
warn("%s", target);
return (1);
}
} else if (iflag && exists) {
fflush(stdout);
fprintf(stderr, "replace %s? ", source);
fprintf(stderr, "replace %s? ", target);
first = ch = getchar();
while(ch != '\n' && ch != EOF)
@ -230,23 +230,23 @@ linkit(const char *target, const char *source, int isdir)
}
if (Fflag && S_ISDIR(sb.st_mode)) {
if (rmdir(source)) {
warn("%s", source);
if (rmdir(target)) {
warn("%s", target);
return (1);
}
} else if (unlink(source)) {
warn("%s", source);
} else if (unlink(target)) {
warn("%s", target);
return (1);
}
}
/* Attempt the link. */
if ((*linkf)(target, source)) {
warn("%s", source);
if ((*linkf)(source, target)) {
warn("%s", target);
return (1);
}
if (vflag)
(void)printf("%s %c> %s\n", source, linkch, target);
(void)printf("%s %c> %s\n", target, linkch, source);
return (0);
}