Differential D30614 Diff 94376 usr.bin/xinstall/xinstall.c

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usr.bin/xinstall/xinstall.c

Show First 20 Lines • Show All 1,300 Lines • ▼ Show 20 Lines	copy(int from_fd, const char from_name, int to_fd, const char to_name,
}		}
return (digest_end(&ctx, NULL));		return (digest_end(&ctx, NULL));
}		}

/*		/*
* strip --		* strip --
* Use strip(1) to strip the target file.		* Use strip(1) to strip the target file.
* Just invoke strip(1) on to_name if from_name is NULL, else try		* Just invoke strip(1) on to_name if from_name is NULL, else try
* to run "strip -o to_name -- from_name" and return 0 on failure.		* to run "strip -o to_name from_name" and return 0 on failure.
* Return 1 on success and assign result of digest_file(to_name)		* Return 1 on success and assign result of digest_file(to_name)
* to *dresp.		* to *dresp.
*/		*/
static int		static int
strip(const char to_name, int to_fd, const char from_name, char **dresp)		strip(const char to_name, int to_fd, const char from_name, char **dresp)
{		{
const char *stripbin;		const char *stripbin;
const char *args[6];		const char *args[5];
		char *prefixed_from_name;
		jillesUnsubmitted Not Done Inline Actions Perhaps name this variable something like `prefixed_from_name`. jilles: Perhaps name this variable something like `prefixed_from_name`.
pid_t pid;		pid_t pid;
int error, serrno, status;		int error, serrno, status;

		prefixed_from_name = NULL;
stripbin = getenv("STRIPBIN");		stripbin = getenv("STRIPBIN");
if (stripbin == NULL)		if (stripbin == NULL)
stripbin = "strip";		stripbin = "strip";
args[0] = stripbin;		args[0] = stripbin;
if (from_name == NULL) {		if (from_name == NULL) {
args[1] = to_name;		args[1] = to_name;
args[2] = NULL;		args[2] = NULL;
} else {		} else {
args[1] = "-o";		args[1] = "-o";
args[2] = to_name;		args[2] = to_name;
args[3] = "--";
args[4] = from_name;		/* Prepend './' if from_name begins with '-' */
args[5] = NULL;		if (from_name[0] == '-') {
		if (asprintf(&prefixed_from_name, "./%s", from_name) == -1)
		mhorneAuthorUnsubmitted Done Inline Actions I'll note that this now goes slightly over 80 columns, but I found a linebreak here to be less legible. mhorne: I'll note that this now goes slightly over 80 columns, but I found a linebreak here to be less…
		return (0);
		args[3] = prefixed_from_name;
		jillesUnsubmitted Done Inline Actions The extra semicolon means it will return here always, and never run strip with the modified path. Also, `snprintf()` will not fail if the buffer is too small. Instead, it will write a truncated string and return the full length. An alternative to a fixed-size buffer could be heap allocation using `asprintf()`; this is not limited to a fixed length, but the resulting string needs to be freed afterward. jilles: The extra semicolon means it will return here always, and never run strip with the modified…
		} else {
		args[3] = from_name;
}		}
		args[4] = NULL;
		}
error = posix_spawnp(&pid, stripbin, NULL, NULL,		error = posix_spawnp(&pid, stripbin, NULL, NULL,
__DECONST(char **, args), environ);		__DECONST(char **, args), environ);
if (error != 0) {		if (error != 0) {
(void)unlink(to_name);		(void)unlink(to_name);
errc(error == EAGAIN \|\| error == EPROCLIM \|\| error == ENOMEM ?		errc(error == EAGAIN \|\| error == EPROCLIM \|\| error == ENOMEM ?
EX_TEMPFAIL : EX_OSERR, error, "spawn %s", stripbin);		EX_TEMPFAIL : EX_OSERR, error, "spawn %s", stripbin);
}		}
		free(prefixed_from_name);
if (waitpid(pid, &status, 0) == -1) {		if (waitpid(pid, &status, 0) == -1) {
		jillesUnsubmitted Not Done Inline Actions Calling `free(NULL)` need not be prevented. jilles: Calling `free(NULL)` need not be prevented.
error = errno;		error = errno;
(void)unlink(to_name);		(void)unlink(to_name);
errc(EX_SOFTWARE, error, "wait");		errc(EX_SOFTWARE, error, "wait");
/* NOTREACHED */		/* NOTREACHED */
}		}
if (status != 0) {		if (status != 0) {
if (from_name != NULL)		if (from_name != NULL)
return (0);		return (0);
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