From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Peter Jones Date: Wed, 26 Feb 2014 21:49:12 -0500 Subject: [PATCH] Make "exit" take a return code. This adds "exit" with a return code. With this patch, any "exit" command /may/ include a return code, and on platforms that support returning with an exit status, we will do so. By default we return the same exit status we did before this patch. Signed-off-by: Peter Jones --- grub-core/commands/minicmd.c | 20 ++++++++++++++++---- grub-core/kern/efi/efi.c | 9 +++++++-- grub-core/kern/emu/main.c | 2 +- grub-core/kern/emu/misc.c | 5 +++-- grub-core/kern/i386/coreboot/init.c | 2 +- grub-core/kern/i386/qemu/init.c | 2 +- grub-core/kern/ieee1275/init.c | 2 +- grub-core/kern/mips/arc/init.c | 2 +- grub-core/kern/mips/loongson/init.c | 2 +- grub-core/kern/mips/qemu_mips/init.c | 2 +- grub-core/kern/misc.c | 11 ++++++++++- grub-core/kern/uboot/init.c | 6 +++--- grub-core/kern/xen/init.c | 2 +- include/grub/misc.h | 2 +- 14 files changed, 48 insertions(+), 21 deletions(-) diff --git a/grub-core/commands/minicmd.c b/grub-core/commands/minicmd.c index fa498931e..2bd3ac76f 100644 --- a/grub-core/commands/minicmd.c +++ b/grub-core/commands/minicmd.c @@ -182,12 +182,24 @@ grub_mini_cmd_lsmod (struct grub_command *cmd __attribute__ ((unused)), } /* exit */ -static grub_err_t __attribute__ ((noreturn)) +static grub_err_t grub_mini_cmd_exit (struct grub_command *cmd __attribute__ ((unused)), - int argc __attribute__ ((unused)), - char *argv[] __attribute__ ((unused))) + int argc, char *argv[]) { - grub_exit (); + int retval = -1; + unsigned long n; + + if (argc < 0 || argc > 1) + return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("one argument expected")); + + if (argc == 1) + { + n = grub_strtoul (argv[0], 0, 10); + if (n != ~0UL) + retval = n; + } + + grub_exit (retval); /* Not reached. */ } diff --git a/grub-core/kern/efi/efi.c b/grub-core/kern/efi/efi.c index 8cff7be02..05d8237a9 100644 --- a/grub-core/kern/efi/efi.c +++ b/grub-core/kern/efi/efi.c @@ -165,11 +165,16 @@ grub_reboot (void) } void -grub_exit (void) +grub_exit (int retval) { + int rc = GRUB_EFI_LOAD_ERROR; + + if (retval == 0) + rc = GRUB_EFI_SUCCESS; + grub_machine_fini (GRUB_LOADER_FLAG_NORETURN); efi_call_4 (grub_efi_system_table->boot_services->exit, - grub_efi_image_handle, GRUB_EFI_SUCCESS, 0, 0); + grub_efi_image_handle, rc, 0, 0); for (;;) ; } diff --git a/grub-core/kern/emu/main.c b/grub-core/kern/emu/main.c index 425bb9603..55ea5a11c 100644 --- a/grub-core/kern/emu/main.c +++ b/grub-core/kern/emu/main.c @@ -67,7 +67,7 @@ grub_reboot (void) } void -grub_exit (void) +grub_exit (int retval __attribute__((unused))) { grub_reboot (); } diff --git a/grub-core/kern/emu/misc.c b/grub-core/kern/emu/misc.c index dfd8a8ec4..0ff13bcaf 100644 --- a/grub-core/kern/emu/misc.c +++ b/grub-core/kern/emu/misc.c @@ -151,9 +151,10 @@ xasprintf (const char *fmt, ...) #if !defined (GRUB_MACHINE_EMU) || defined (GRUB_UTIL) void -grub_exit (void) +__attribute__ ((noreturn)) +grub_exit (int rc) { - exit (1); + exit (rc < 0 ? 1 : rc); } #endif diff --git a/grub-core/kern/i386/coreboot/init.c b/grub-core/kern/i386/coreboot/init.c index 3314f027f..36f9134b7 100644 --- a/grub-core/kern/i386/coreboot/init.c +++ b/grub-core/kern/i386/coreboot/init.c @@ -41,7 +41,7 @@ extern grub_uint8_t _end[]; extern grub_uint8_t _edata[]; void __attribute__ ((noreturn)) -grub_exit (void) +grub_exit (int rc __attribute__((unused))) { /* We can't use grub_fatal() in this function. This would create an infinite loop, since grub_fatal() calls grub_abort() which in turn calls grub_exit(). */ diff --git a/grub-core/kern/i386/qemu/init.c b/grub-core/kern/i386/qemu/init.c index 271b6fbfa..9fafe98f0 100644 --- a/grub-core/kern/i386/qemu/init.c +++ b/grub-core/kern/i386/qemu/init.c @@ -42,7 +42,7 @@ extern grub_uint8_t _end[]; extern grub_uint8_t _edata[]; void __attribute__ ((noreturn)) -grub_exit (void) +grub_exit (int rc __attribute__((unused))) { /* We can't use grub_fatal() in this function. This would create an infinite loop, since grub_fatal() calls grub_abort() which in turn calls grub_exit(). */ diff --git a/grub-core/kern/ieee1275/init.c b/grub-core/kern/ieee1275/init.c index d483e35ee..e71d15841 100644 --- a/grub-core/kern/ieee1275/init.c +++ b/grub-core/kern/ieee1275/init.c @@ -71,7 +71,7 @@ grub_addr_t grub_ieee1275_original_stack; #endif void -grub_exit (void) +grub_exit (int rc __attribute__((unused))) { grub_ieee1275_exit (); } diff --git a/grub-core/kern/mips/arc/init.c b/grub-core/kern/mips/arc/init.c index 2ed3ff319..5c40c3407 100644 --- a/grub-core/kern/mips/arc/init.c +++ b/grub-core/kern/mips/arc/init.c @@ -276,7 +276,7 @@ grub_halt (void) } void -grub_exit (void) +grub_exit (int rc __attribute__((unused))) { GRUB_ARC_FIRMWARE_VECTOR->exit (); diff --git a/grub-core/kern/mips/loongson/init.c b/grub-core/kern/mips/loongson/init.c index 7b96531b9..dff598ca7 100644 --- a/grub-core/kern/mips/loongson/init.c +++ b/grub-core/kern/mips/loongson/init.c @@ -304,7 +304,7 @@ grub_halt (void) } void -grub_exit (void) +grub_exit (int rc __attribute__((unused))) { grub_halt (); } diff --git a/grub-core/kern/mips/qemu_mips/init.c b/grub-core/kern/mips/qemu_mips/init.c index be88b77d2..8b6c55ffc 100644 --- a/grub-core/kern/mips/qemu_mips/init.c +++ b/grub-core/kern/mips/qemu_mips/init.c @@ -75,7 +75,7 @@ grub_machine_fini (int flags __attribute__ ((unused))) } void -grub_exit (void) +grub_exit (int rc __attribute__((unused))) { grub_halt (); } diff --git a/grub-core/kern/misc.c b/grub-core/kern/misc.c index 3af336ee2..63b586d09 100644 --- a/grub-core/kern/misc.c +++ b/grub-core/kern/misc.c @@ -1209,9 +1209,18 @@ grub_abort (void) grub_getkey (); } - grub_exit (); + grub_exit (1); } +#if defined (__clang__) && !defined (GRUB_UTIL) +/* clang emits references to abort(). */ +void __attribute__ ((noreturn)) +abort (void) +{ + grub_abort (); +} +#endif + void grub_fatal (const char *fmt, ...) { diff --git a/grub-core/kern/uboot/init.c b/grub-core/kern/uboot/init.c index 3e338645c..be2a5be1d 100644 --- a/grub-core/kern/uboot/init.c +++ b/grub-core/kern/uboot/init.c @@ -39,9 +39,9 @@ extern grub_size_t grub_total_module_size; static unsigned long timer_start; void -grub_exit (void) +grub_exit (int rc) { - grub_uboot_return (0); + grub_uboot_return (rc < 0 ? 1 : rc); } static grub_uint64_t @@ -78,7 +78,7 @@ grub_machine_init (void) if (!ver) { /* Don't even have a console to log errors to... */ - grub_exit (); + grub_exit (-1); } else if (ver > API_SIG_VERSION) { diff --git a/grub-core/kern/xen/init.c b/grub-core/kern/xen/init.c index 782ca7295..708b060f3 100644 --- a/grub-core/kern/xen/init.c +++ b/grub-core/kern/xen/init.c @@ -584,7 +584,7 @@ grub_machine_init (void) } void -grub_exit (void) +grub_exit (int rc __attribute__((unused))) { struct sched_shutdown arg; diff --git a/include/grub/misc.h b/include/grub/misc.h index 7d2b55196..fd18e6320 100644 --- a/include/grub/misc.h +++ b/include/grub/misc.h @@ -353,7 +353,7 @@ int EXPORT_FUNC(grub_vsnprintf) (char *str, grub_size_t n, const char *fmt, char *EXPORT_FUNC(grub_xasprintf) (const char *fmt, ...) __attribute__ ((format (GNU_PRINTF, 1, 2))) WARN_UNUSED_RESULT; char *EXPORT_FUNC(grub_xvasprintf) (const char *fmt, va_list args) WARN_UNUSED_RESULT; -void EXPORT_FUNC(grub_exit) (void) __attribute__ ((noreturn)); +void EXPORT_FUNC(grub_exit) (int rc) __attribute__ ((noreturn)); grub_uint64_t EXPORT_FUNC(grub_divmod64) (grub_uint64_t n, grub_uint64_t d, grub_uint64_t *r);