diff options
Diffstat (limited to 'wrapper.c')
| -rw-r--r-- | wrapper.c | 45 |
1 files changed, 31 insertions, 14 deletions
@@ -236,8 +236,24 @@ ssize_t xread(int fd, void *buf, size_t len) len = MAX_IO_SIZE; while (1) { nr = read(fd, buf, len); - if ((nr < 0) && (errno == EAGAIN || errno == EINTR)) - continue; + if (nr < 0) { + if (errno == EINTR) + continue; + if (errno == EAGAIN || errno == EWOULDBLOCK) { + struct pollfd pfd; + pfd.events = POLLIN; + pfd.fd = fd; + /* + * it is OK if this poll() failed; we + * want to leave this infinite loop + * only when read() returns with + * success, or an expected failure, + * which would be checked by the next + * call to read(2). + */ + poll(&pfd, 1, -1); + } + } return nr; } } @@ -375,6 +391,19 @@ FILE *xfdopen(int fd, const char *mode) return stream; } +FILE *fopen_for_writing(const char *path) +{ + FILE *ret = fopen(path, "w"); + + if (!ret && errno == EPERM) { + if (!unlink(path)) + ret = fopen(path, "w"); + else + errno = EPERM; + } + return ret; +} + int xmkstemp(char *template) { int fd; @@ -601,18 +630,6 @@ int access_or_die(const char *path, int mode, unsigned flag) return ret; } -struct passwd *xgetpwuid_self(void) -{ - struct passwd *pw; - - errno = 0; - pw = getpwuid(getuid()); - if (!pw) - die(_("unable to look up current user in the passwd file: %s"), - errno ? strerror(errno) : _("no such user")); - return pw; -} - char *xgetcwd(void) { struct strbuf sb = STRBUF_INIT; |