From 29bf6814f74096e5d8ea22058e638eb362717b8a Mon Sep 17 00:00:00 2001 From: Dan McGee Date: Sun, 15 Jun 2008 19:15:36 -0500 Subject: Use access() instead of stat() when possible We were using the stat() system call in quite a few places when we didn't actually need anything the stat struct returned- we were simply checking for file existence. access() will be more efficient in those cases. Before (strace pacman -Ss pacman): % time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 33.16 0.005987 0 19016 stat64 After: % time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 34.85 0.003863 0 12633 1 access 7.95 0.000881 0 6391 7 stat64 Signed-off-by: Dan McGee --- lib/libalpm/trans.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'lib/libalpm/trans.c') diff --git a/lib/libalpm/trans.c b/lib/libalpm/trans.c index eb53e952..06084ae9 100644 --- a/lib/libalpm/trans.c +++ b/lib/libalpm/trans.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include #include @@ -451,7 +452,6 @@ int _alpm_runscriptlet(const char *root, const char *installfn, char tmpdir[PATH_MAX]; char cwd[PATH_MAX]; char *scriptpath; - struct stat buf; pid_t pid; int clean_tmpdir = 0; int restore_cwd = 0; @@ -459,14 +459,14 @@ int _alpm_runscriptlet(const char *root, const char *installfn, ALPM_LOG_FUNC; - if(stat(installfn, &buf)) { + if(access(installfn, R_OK)) { /* not found */ _alpm_log(PM_LOG_DEBUG, "scriptlet '%s' not found\n", installfn); return(0); } /* NOTE: popen will use the PARENT's /bin/sh, not the chroot's */ - if(stat("/bin/sh", &buf)) { + if(access("/bin/sh", X_OK)) { /* not found */ _alpm_log(PM_LOG_ERROR, _("No /bin/sh in parent environment, aborting scriptlet\n")); return(0); @@ -474,7 +474,7 @@ int _alpm_runscriptlet(const char *root, const char *installfn, /* creates a directory in $root/tmp/ for copying/extracting the scriptlet */ snprintf(tmpdir, PATH_MAX, "%stmp/", root); - if(stat(tmpdir, &buf)) { + if(access(tmpdir, F_OK) != 0) { _alpm_makepath_mode(tmpdir, 01777); } snprintf(tmpdir, PATH_MAX, "%stmp/alpm_XXXXXX", root); -- cgit v1.2.3-54-g00ecf