#include #include #include #include #include #include #include #include #include "subcmd-util.h" #include "exec-cmd.h" #include "subcmd-config.h" #define MAX_ARGS 32 #define PATH_MAX 4096 static const char *argv_exec_path; static const char *argv0_path; void exec_cmd_init(const char *exec_name, const char *prefix, const char *exec_path, const char *exec_path_env) { subcmd_config.exec_name = exec_name; subcmd_config.prefix = prefix; subcmd_config.exec_path = exec_path; subcmd_config.exec_path_env = exec_path_env; } #define is_dir_sep(c) ((c) == '/') static int is_absolute_path(const char *path) { return path[0] == '/'; } static const char *get_pwd_cwd(void) { static char cwd[PATH_MAX + 1]; char *pwd; struct stat cwd_stat, pwd_stat; if (getcwd(cwd, PATH_MAX) == NULL) return NULL; pwd = getenv("PWD"); if (pwd && strcmp(pwd, cwd)) { stat(cwd, &cwd_stat); if (!stat(pwd, &pwd_stat) && pwd_stat.st_dev == cwd_stat.st_dev && pwd_stat.st_ino == cwd_stat.st_ino) { strlcpy(cwd, pwd, PATH_MAX); } } return cwd; } static const char *make_nonrelative_path(const char *path) { static char buf[PATH_MAX + 1]; if (is_absolute_path(path)) { if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX) die("Too long path: %.*s", 60, path); } else { const char *cwd = get_pwd_cwd(); if (!cwd) die("Cannot determine the current working directory"); if (snprintf(buf, PATH_MAX, "%s/%s", cwd, path) >= PATH_MAX) die("Too long path: %.*s", 60, path); } return buf; } char *system_path(const char *path) { char *buf = NULL; if (is_absolute_path(path)) return strdup(path); astrcatf(&buf, "%s/%s", subcmd_config.prefix, path); return buf; } const char *extract_argv0_path(const char *argv0) { const char *slash; if (!argv0 || !*argv0) return NULL; slash = argv0 + strlen(argv0); while (argv0 <= slash && !is_dir_sep(*slash)) slash--; if (slash >= argv0) { argv0_path = strndup(argv0, slash - argv0); return argv0_path ? slash + 1 : NULL; } return argv0; } void set_argv_exec_path(const char *exec_path) { argv_exec_path = exec_path; /* * Propagate this setting to external programs. */ setenv(subcmd_config.exec_path_env, exec_path, 1); } /* Returns the highest-priority location to look for subprograms. */ char *get_argv_exec_path(void) { char *env; if (argv_exec_path) return strdup(argv_exec_path); env = getenv(subcmd_config.exec_path_env); if (env && *env) return strdup(env); return system_path(subcmd_config.exec_path); } static void add_path(char **out, const char *path) { if (path && *path) { if (is_absolute_path(path)) astrcat(out, path); else astrcat(out, make_nonrelative_path(path)); astrcat(out, ":"); } } void setup_path(void) { const char *old_path = getenv("PATH"); char *new_path = NULL; char *tmp = get_argv_exec_path(); add_path(&new_path, tmp); add_path(&new_path, argv0_path); free(tmp); if (old_path) astrcat(&new_path, old_path); else astrcat(&new_path, "/usr/local/bin:/usr/bin:/bin"); setenv("PATH", new_path, 1); free(new_path); } static const char **prepare_exec_cmd(const char **argv) { int argc; const char **nargv; for (argc = 0; argv[argc]; argc++) ; /* just counting */ nargv = malloc(sizeof(*nargv) * (argc + 2)); nargv[0] = subcmd_config.exec_name; for (argc = 0; argv[argc]; argc++) nargv[argc + 1] = argv[argc]; nargv[argc + 1] = NULL; return nargv; } int execv_cmd(const char **argv) { const char **nargv = prepare_exec_cmd(argv); /* execvp() can only ever return if it fails */ execvp(subcmd_config.exec_name, (char **)nargv); free(nargv); return -1; } int execl_cmd(const char *cmd,...) { int argc; const char *argv[MAX_ARGS + 1]; const char *arg; va_list param; va_start(param, cmd); argv[0] = cmd; argc = 1; while (argc < MAX_ARGS) { arg = argv[argc++] = va_arg(param, char *); if (!arg) break; } va_end(param); if (MAX_ARGS <= argc) { fprintf(stderr, " Error: too many args to run %s\n", cmd); return -1; } argv[argc] = NULL; return execv_cmd(argv); } bmit();'>mode:
authorArd Biesheuvel <ard.biesheuvel@linaro.org>2017-01-17 13:46:29 +0000
committerHerbert Xu <herbert@gondor.apana.org.au>2017-01-23 22:41:33 +0800
commit11e3b725cfc282efe9d4a354153e99d86a16af08 (patch)
tree8b5b9e0e1bcae1ab98ee652ffb7b13b05c209bd6 /sound/soc/sh/sh7760-ac97.c
parentd6040764adcb5cb6de1489422411d701c158bb69 (diff)
crypto: arm64/aes-blk - honour iv_out requirement in CBC and CTR modes
Update the ARMv8 Crypto Extensions and the plain NEON AES implementations in CBC and CTR modes to return the next IV back to the skcipher API client. This is necessary for chaining to work correctly. Note that for CTR, this is only done if the request is a round multiple of the block size, since otherwise, chaining is impossible anyway. Cc: <stable@vger.kernel.org> # v3.16+ Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'sound/soc/sh/sh7760-ac97.c')