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| author | dwmalone <dwmalone@FreeBSD.org> | 2004-03-23 12:29:17 +0000 |
|---|---|---|
| committer | dwmalone <dwmalone@FreeBSD.org> | 2004-03-23 12:29:17 +0000 |
| commit | 7a220808b385b0705af10fbe0e346aa70f0e72ce (patch) | |
| tree | c3b7f22fc61be34489b4f335c537107094762b56 /usr.bin/truss | |
| parent | 422a2ca6b489b0e27c89e494979edb49bd275c0d (diff) | |
| download | FreeBSD-src-7a220808b385b0705af10fbe0e346aa70f0e72ce.zip FreeBSD-src-7a220808b385b0705af10fbe0e346aa70f0e72ce.tar.gz | |
Use pread to implement pread, rather than taking a detour throug stdio.
PR: 52190
Submitted by: Dan Nelson <dnelson@allantgroup.com>
Diffstat (limited to 'usr.bin/truss')
| -rw-r--r-- | usr.bin/truss/syscalls.c | 18 |
1 files changed, 2 insertions, 16 deletions
diff --git a/usr.bin/truss/syscalls.c b/usr.bin/truss/syscalls.c index 8638ec9..6f35f99 100644 --- a/usr.bin/truss/syscalls.c +++ b/usr.bin/truss/syscalls.c @@ -169,23 +169,9 @@ get_syscall(const char *name) { static int get_struct(int procfd, void *offset, void *buf, int len) { - char *pos; - FILE *p; - int c, fd; - if ((fd = dup(procfd)) == -1) - err(1, "dup"); - if ((p = fdopen(fd, "r")) == NULL) - err(1, "fdopen"); - if (fseeko(p, (uintptr_t)offset, SEEK_SET) == 0) { - for (pos = (char *)buf; len--; pos++) { - if ((c = fgetc(p)) == EOF) - return (-1); - *pos = c; - } - } else - bzero(buf, len); - fclose(p); + if (pread(procfd, buf, len, (uintptr_t)offset) != len) + return -1; return 0; } |
