diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-06-04 16:51:14 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-04 19:06:26 -0700 |
| commit | 986db2d14a6dca6456b63b4f5c410ae2aab4ec9d (patch) | |
| tree | d1fcdf69ccd6c5d5b3b646157f7d1fb86fabfa04 /fs | |
| parent | eac2cece45074e372f78a459c7bb2d7207b72736 (diff) | |
exec: simplify the copy_strings_kernel calling convention
copy_strings_kernel is always used with a single argument,
adjust the calling convention to that.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Link: http://lkml.kernel.org/r/20200501104105.2621149-2-hch@lst.de
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/binfmt_em86.c | 6 | ||||
| -rw-r--r-- | fs/binfmt_misc.c | 4 | ||||
| -rw-r--r-- | fs/binfmt_script.c | 6 | ||||
| -rw-r--r-- | fs/exec.c | 13 |
4 files changed, 14 insertions, 15 deletions
diff --git a/fs/binfmt_em86.c b/fs/binfmt_em86.c index 466497860c62..f33fa668c91f 100644 --- a/fs/binfmt_em86.c +++ b/fs/binfmt_em86.c @@ -68,15 +68,15 @@ static int load_em86(struct linux_binprm *bprm) * user environment and arguments are stored. */ remove_arg_zero(bprm); - retval = copy_strings_kernel(1, &bprm->filename, bprm); + retval = copy_string_kernel(bprm->filename, bprm); if (retval < 0) return retval; bprm->argc++; if (i_arg) { - retval = copy_strings_kernel(1, &i_arg, bprm); + retval = copy_string_kernel(i_arg, bprm); if (retval < 0) return retval; bprm->argc++; } - retval = copy_strings_kernel(1, &i_name, bprm); + retval = copy_string_kernel(i_name, bprm); if (retval < 0) return retval; bprm->argc++; diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c index cdb45829354d..b15257d8ff5e 100644 --- a/fs/binfmt_misc.c +++ b/fs/binfmt_misc.c @@ -190,13 +190,13 @@ static int load_misc_binary(struct linux_binprm *bprm) bprm->file = NULL; } /* make argv[1] be the path to the binary */ - retval = copy_strings_kernel(1, &bprm->interp, bprm); + retval = copy_string_kernel(bprm->interp, bprm); if (retval < 0) goto error; bprm->argc++; /* add the interp as argv[0] */ - retval = copy_strings_kernel(1, &fmt->interpreter, bprm); + retval = copy_string_kernel(fmt->interpreter, bprm); if (retval < 0) goto error; bprm->argc++; diff --git a/fs/binfmt_script.c b/fs/binfmt_script.c index e9e6a6f4a35f..c4fb7f52a46e 100644 --- a/fs/binfmt_script.c +++ b/fs/binfmt_script.c @@ -117,17 +117,17 @@ static int load_script(struct linux_binprm *bprm) retval = remove_arg_zero(bprm); if (retval) return retval; - retval = copy_strings_kernel(1, &bprm->interp, bprm); + retval = copy_string_kernel(bprm->interp, bprm); if (retval < 0) return retval; bprm->argc++; if (i_arg) { - retval = copy_strings_kernel(1, &i_arg, bprm); + retval = copy_string_kernel(i_arg, bprm); if (retval < 0) return retval; bprm->argc++; } - retval = copy_strings_kernel(1, &i_name, bprm); + retval = copy_string_kernel(i_name, bprm); if (retval) return retval; bprm->argc++; diff --git a/fs/exec.c b/fs/exec.c index 2c465119affc..4814b26a56fb 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -588,24 +588,23 @@ out: } /* - * Like copy_strings, but get argv and its values from kernel memory. + * Copy and argument/environment string from the kernel to the processes stack. */ -int copy_strings_kernel(int argc, const char *const *__argv, - struct linux_binprm *bprm) +int copy_string_kernel(const char *arg, struct linux_binprm *bprm) { int r; mm_segment_t oldfs = get_fs(); struct user_arg_ptr argv = { - .ptr.native = (const char __user *const __user *)__argv, + .ptr.native = (const char __user *const __user *)&arg, }; set_fs(KERNEL_DS); - r = copy_strings(argc, argv, bprm); + r = copy_strings(1, argv, bprm); set_fs(oldfs); return r; } -EXPORT_SYMBOL(copy_strings_kernel); +EXPORT_SYMBOL(copy_string_kernel); #ifdef CONFIG_MMU @@ -1865,7 +1864,7 @@ static int __do_execve_file(int fd, struct filename *filename, if (retval < 0) goto out; - retval = copy_strings_kernel(1, &bprm->filename, bprm); + retval = copy_string_kernel(bprm->filename, bprm); if (retval < 0) goto out; |