From 9ab6c58530a86e10549554b2c4542dd5bf3314b8 Mon Sep 17 00:00:00 2001 From: Jean-Philippe Andre Date: Mon, 4 Nov 2013 15:12:51 +0900 Subject: [PATCH] elm/quicklaunch: Improve executable path search Always search executable based on CWD if possible. This way, elementary_run behaves more like sh where all of sh script, sh ./script and sh `pwd`/script will work. Also, remove quicklaunch-specific ELM_MAIN. This needs some doc, but compiling with -fpie and -pie is much better. Note: There's an API/ABI break here, BUT these APIs are marked as not to be used outside macros. And there isn't any macro using them :) --- legacy/elementary/src/bin/quicklaunch.c | 2 +- legacy/elementary/src/lib/elm_general.h | 10 ++-- legacy/elementary/src/lib/elm_main.c | 96 +++++++++++++++++++++------------ 3 files changed, 71 insertions(+), 37 deletions(-) diff --git a/legacy/elementary/src/bin/quicklaunch.c b/legacy/elementary/src/bin/quicklaunch.c index 2a811d2..f79770c 100644 --- a/legacy/elementary/src/bin/quicklaunch.c +++ b/legacy/elementary/src/bin/quicklaunch.c @@ -151,7 +151,7 @@ handle_run(int fd, unsigned long bytes) } } #endif - elm_quicklaunch_prepare(argc, argv); + elm_quicklaunch_prepare(argc, argv, cwd); elm_quicklaunch_fork(argc, argv, cwd, post_fork, NULL); elm_quicklaunch_cleanup(); } diff --git a/legacy/elementary/src/lib/elm_general.h b/legacy/elementary/src/lib/elm_general.h index 7876af4..14d8776 100644 --- a/legacy/elementary/src/lib/elm_general.h +++ b/legacy/elementary/src/lib/elm_general.h @@ -143,7 +143,11 @@ extern EAPI double _elm_startup_time; #ifndef ELM_LIB_QUICKLAUNCH #define ELM_MAIN() int main(int argc, char **argv) { int ret; _elm_startup_time = ecore_time_unix_get(); elm_init(argc, argv); ret = elm_main(argc, argv); return ret; } /**< macro to be used after the elm_main() function */ #else -#define ELM_MAIN() int main(int argc, char **argv) { _elm_startup_time = ecore_time_unix_get(); return elm_quicklaunch_fallback(argc, argv); } /**< macro to be used after the elm_main() function */ +/** @deprecated macro to be used after the elm_main() function. + * Do not define ELM_LIB_QUICKLAUNCH + * Compile your programs with -fpie and -pie -rdynamic instead, to generate a single binary (linkable executable). + */ +#define ELM_MAIN() int main(int argc, char **argv) { _elm_startup_time = ecore_time_unix_get(); return elm_quicklaunch_fallback(argc, argv); } #endif /**************************************************************************/ @@ -270,7 +274,7 @@ EAPI void elm_quicklaunch_seed(void); /** * Exposed symbol used only by macros and should not be used by apps */ -EAPI Eina_Bool elm_quicklaunch_prepare(int argc, char **argv); +EAPI Eina_Bool elm_quicklaunch_prepare(int argc, char **argv, const char *cwd); /** * Exposed symbol used only by macros and should not be used by apps @@ -290,7 +294,7 @@ EAPI int elm_quicklaunch_fallback(int argc, char **argv); /** * Exposed symbol used only by macros and should not be used by apps */ -EAPI char *elm_quicklaunch_exe_path_get(const char *exe); +EAPI char *elm_quicklaunch_exe_path_get(const char *exe, const char *cwd); /** * Set a new policy's value (for a given policy group/identifier). diff --git a/legacy/elementary/src/lib/elm_main.c b/legacy/elementary/src/lib/elm_main.c index ebf538b..927481f 100644 --- a/legacy/elementary/src/lib/elm_main.c +++ b/legacy/elementary/src/lib/elm_main.c @@ -843,63 +843,87 @@ static int (*qr_main)(int argc, EAPI Eina_Bool elm_quicklaunch_prepare(int argc, - char **argv) + char **argv, + const char *cwd) { #ifdef HAVE_FORK - char *exe; + char *exe, *exe2, *p; + char *exename; if (argc <= 0 || argv == NULL) return EINA_FALSE; - exe = elm_quicklaunch_exe_path_get(argv[0]); + exe = elm_quicklaunch_exe_path_get(argv[0], cwd); if (!exe) { ERR("requested quicklaunch binary '%s' does not exist\n", argv[0]); return EINA_FALSE; } - else + + exe2 = malloc(strlen(exe) + 1 + 7 + strlen(LIBEXT)); + strcpy(exe2, exe); + p = strrchr(exe2, '/'); + if (p) p++; + else p = exe2; + exename = alloca(strlen(p) + 1); + strcpy(exename, p); + *p = 0; + strcat(p, "../lib/"); + strcat(p, exename); + strcat(p, LIBEXT); + if (access(exe2, R_OK | X_OK) != 0) + { + free(exe2); + exe2 = NULL; + } + + /* Try linking to executable first. Works with PIE files. */ + qr_handle = dlopen(exe, RTLD_NOW | RTLD_GLOBAL); + if (qr_handle) { - char *exe2, *p; - char *exename; - - exe2 = malloc(strlen(exe) + 1 + 7 + strlen(LIBEXT)); - strcpy(exe2, exe); - p = strrchr(exe2, '/'); - if (p) p++; - else p = exe2; - exename = alloca(strlen(p) + 1); - strcpy(exename, p); - *p = 0; - strcat(p, "../lib/"); - strcat(p, exename); - strcat(p, LIBEXT); - if (!access(exe2, R_OK | X_OK)) + INF("dlopen('%s') = %p", exe, qr_handle); + qr_main = dlsym(qr_handle, "elm_main"); + if (qr_main) { + INF("dlsym(%p, 'elm_main') = %p", qr_handle, qr_main); + free(exe2); free(exe); - exe = exe2; + return EINA_TRUE; } - else - free(exe2); + dlclose(qr_handle); + qr_handle = NULL; } - qr_handle = dlopen(exe, RTLD_NOW | RTLD_GLOBAL); + + if (!exe2) + { + WRN("not quicklauncher capable: '%s'", exe); + free(exe); + return EINA_FALSE; + } + free(exe); + + /* Open companion .so file. + * Support for legacy quicklaunch apps with separate library. + */ + qr_handle = dlopen(exe2, RTLD_NOW | RTLD_GLOBAL); if (!qr_handle) { fprintf(stderr, "dlerr: %s\n", dlerror()); - WRN("dlopen('%s') failed: %s", exe, dlerror()); - free(exe); + WRN("dlopen('%s') failed: %s", exe2, dlerror()); + free(exe2); return EINA_FALSE; } - INF("dlopen('%s') = %p", exe, qr_handle); + INF("dlopen('%s') = %p", exe2, qr_handle); qr_main = dlsym(qr_handle, "elm_main"); INF("dlsym(%p, 'elm_main') = %p", qr_handle, qr_main); if (!qr_main) { - WRN("not quicklauncher capable: no elm_main in '%s'", exe); + WRN("not quicklauncher capable: no elm_main in '%s'", exe2); dlclose(qr_handle); qr_handle = NULL; - free(exe); + free(exe2); return EINA_FALSE; } - free(exe); + free(exe2); return EINA_TRUE; #else (void)argc; @@ -1018,16 +1042,17 @@ elm_quicklaunch_fallback(int argc, char **argv) { int ret; + char cwd[PATH_MAX]; elm_quicklaunch_init(argc, argv); elm_quicklaunch_sub_init(argc, argv); - elm_quicklaunch_prepare(argc, argv); + elm_quicklaunch_prepare(argc, argv, getcwd(cwd, sizeof(cwd))); ret = qr_main(argc, argv); exit(ret); return ret; } EAPI char * -elm_quicklaunch_exe_path_get(const char *exe) +elm_quicklaunch_exe_path_get(const char *exe, const char *cwd) { static char *path = NULL; static Eina_List *pathlist = NULL; @@ -1035,8 +1060,13 @@ elm_quicklaunch_exe_path_get(const char *exe) const Eina_List *l; char buf[PATH_MAX]; if (exe[0] == '/') return strdup(exe); - if ((exe[0] == '.') && (exe[1] == '/')) return strdup(exe); - if ((exe[0] == '.') && (exe[1] == '.') && (exe[2] == '/')) return strdup(exe); + if (cwd) + pathlist = eina_list_append(pathlist, eina_stringshare_add(cwd)); + else + { + if ((exe[0] == '.') && (exe[1] == '/')) return strdup(exe); + if ((exe[0] == '.') && (exe[1] == '.') && (exe[2] == '/')) return strdup(exe); + } if (!path) { const char *p, *pp; -- 2.7.4