modpost: add read_text_file() and get_line() helpers (ac5100f5) · Commits · 戴 / test

scripts/mod/modpost.c

+49 −0

Original line number	Diff line number	Diff line
		@@ -112,6 +112,55 @@ void do_nofail(void ptr, const char *expr)
		return ptr;
		}

		char read_text_file(const char filename)
		{
		struct stat st;
		size_t nbytes;
		int fd;
		char *buf;

		fd = open(filename, O_RDONLY);
		if (fd < 0) {
		perror(filename);
		exit(1);
		}

		if (fstat(fd, &st) < 0) {
		perror(filename);
		exit(1);
		}

		buf = NOFAIL(malloc(st.st_size + 1));

		nbytes = st.st_size;

		while (nbytes) {
		ssize_t bytes_read;

		bytes_read = read(fd, buf, nbytes);
		if (bytes_read < 0) {
		perror(filename);
		exit(1);
		}

		nbytes -= bytes_read;
		}
		buf[st.st_size] = '\0';

		close(fd);

		return buf;
		}

		char get_line(char *stringp)
		{
		/* do not return the unwanted extra line at EOF */
		if (stringp && *stringp == '\0')
		return NULL;

		return strsep(stringp, "\n");
		}

		/* A list of all modules we processed */
		static struct module *modules;

+2 −0

Original line number	Diff line number	Diff line
		@@ -191,6 +191,8 @@ void add_moddevtable(struct buffer buf, struct module mod);
		void get_src_version(const char *modname, char sum[], unsigned sumlen);

		/* from modpost.c */
		char read_text_file(const char filename);
		char get_line(char *stringp);
		void grab_file(const char filename, unsigned long *size);
		char* get_next_line(unsigned long pos, void file, unsigned long size);
		void release_file(void *file, unsigned long size);