Messages in this thread Patch in this message |  | | From | Joe <> | Subject | PATCH: /proc/cflags | Date | Wed, 1 May 1996 16:51:33 -0700 (PDT) |
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The patch below adds an entry to /proc that represents the CFLAGS definition passed to gcc at compile time.
The CFLAGS value is defined in linux/compile.h as LINUX_CFLAGS.
This diff should apply to all recent kernels.
.-. . |- -- -- | | \_/
--- linux/Makefile.orig Wed May 1 13:01:45 1996 +++ linux/Makefile Wed May 1 13:30:22 1996 @@ -230,6 +230,7 @@ echo \#define LINUX_COMPILE_DOMAIN ; \ fi >> .ver @echo \#define LINUX_COMPILER \"`$(HOSTCC) -v 2>&1 | tail -1`\" >> .ver + @echo \#define LINUX_CFLAGS \"$(CFLAGS)\" >> .ver @mv -f .ver $@ include/linux/version.h: ./Makefile --- linux/include/linux/proc_fs.h.orig Wed May 1 13:11:54 1996 +++ linux/include/linux/proc_fs.h Wed May 1 13:12:43 1996 @@ -42,7 +42,8 @@ PROC_SYS, PROC_MTAB, PROC_MD, - PROC_RTC + PROC_RTC, + PROC_CFLAGS }; enum pid_directory_inos { --- linux/fs/proc/root.c.orig Wed May 1 13:21:18 1996 +++ linux/fs/proc/root.c Wed May 1 16:20:31 1996 @@ -359,6 +359,11 @@ }); #endif + proc_register(&proc_root, &(struct proc_dir_entry) { + PROC_CFLAGS, 6, "cflags", + S_IFREG | S_IRUGO, 1, 0, 0, + }); + proc_register( &proc_root, &(struct proc_dir_entry) { PROC_MTAB, 6, "mounts", S_IFREG | S_IRUGO, 1, 0, 0, } ); --- linux/fs/proc/array.c.orig Wed May 1 13:13:45 1996 +++ linux/fs/proc/array.c Wed May 1 13:22:29 1996 @@ -43,6 +43,7 @@ #include <linux/mm.h> #include <linux/pagemap.h> #include <linux/swap.h> +#include <linux/compile.h> #include <asm/segment.h> #include <asm/pgtable.h> @@ -317,6 +318,11 @@ return sprintf(buffer, "%s\n", saved_command_line); } +static int get_cflags(char * buffer) +{ + return sprintf(buffer, "%s\n", LINUX_CFLAGS); +} + static struct task_struct ** get_task(pid_t pid) { struct task_struct ** p; @@ -1041,6 +1047,8 @@ case PROC_RTC: return get_rtc_status(page); #endif + case PROC_CFLAGS: + return get_cflags(page); } return -EBADF; }
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