From: Leonid Krivoshein <klark.devel@gmail.com> To: make-initrd@lists.altlinux.org Subject: Re: [make-initrd] [PATCH 1/3] Reimplement ueventd Date: Mon, 15 May 2023 02:08:09 +0300 Message-ID: <f73ff65f-409b-2c67-fe42-969d089e5c24@gmail.com> (raw) In-Reply-To: <6b444ed922286eb3df8f5322b1bddf9c55753eb8.1683200226.git.gladkov.alexey@gmail.com> Тут ошибок нет, но есть над чем позудеть.)) On 5/4/23 16:42, Alexey Gladkov wrote: > [...] > diff --git a/datasrc/ueventd/path.c b/datasrc/ueventd/path.c > new file mode 100644 > index 00000000..7880ad5c > --- /dev/null > +++ b/datasrc/ueventd/path.c > @@ -0,0 +1,80 @@ > +/* SPDX-License-Identifier: GPL-2.0-or-later */ > + > +#include <stdlib.h> > +#include <dirent.h> > +#include <fcntl.h> > +#include <errno.h> > + > +#include "ueventd.h" > + > +int is_dot_dir(struct dirent *ent) > +{ > + return (ent->d_type == DT_DIR && > + (ent->d_name[0] == '.' && (ent->d_name[1] == '\0' || > + (ent->d_name[1] == '.' && ent->d_name[2] == '\0') ))); > +} > + > +DIR *xopendir(const char *path) > +{ > + DIR *dir = opendir(path); > + if (!dir) > + fatal("opendir: %s: %m", path); > + return dir; > +} > + > + > +struct dirent *xreaddir(DIR *d, const char *path) > +{ > + struct dirent *ent; > + > + errno = 0; > + ent = readdir(d); > + if (!ent) { > + if (!errno) > + return NULL; Создавать этот NULL дольше, чем вернуть готовый ent. Я бы поменял условие на if (!ent && errno) fatal(...); Получится даже короче и читабельней. > + fatal("readdir: %s: %m", path); > + } > + return ent; > +} > + > +int empty_directory(const char *path) > +{ > + struct dirent *ent; > + int is_empty = 1; > + DIR *d = xopendir(path); > + > + while ((ent = xreaddir(d, path)) != NULL) { > + if (ent->d_name[0] != '.') { > + is_empty = 0; > + break; > + } > + } > + closedir(d); > + > + return is_empty; > +} Назначение функции по имени кажется двусмысленным и можно обойтись без этой переменной в стеке, даже немного сократив код: int is_dir_empty(const char *path) { struct dirent *ent; DIR *d = xopendir(path); while ((ent = xreaddir(d, path)) != NULL) { if (ent->d_name[0] != '.') { closedir(d); return 0; } } closedir(d); return -1; } Не помню, какую задачу решает этот минус, но кажется правильней для логического значения. > + > +ssize_t read_retry(int fd, void *buf, size_t count) > +{ > + return TEMP_FAILURE_RETRY(read(fd, buf, count)); > +} > + > +ssize_t write_retry(int fd, const void *buf, size_t count) > +{ > + return TEMP_FAILURE_RETRY(write(fd, buf, count)); > +} > + > +ssize_t write_loop(int fd, const char *buffer, size_t count) > +{ > + ssize_t offset = 0; > + > + while (count > 0) { > + ssize_t block = write_retry(fd, &buffer[offset], count); > + > + if (block <= 0) > + return offset ? : block; Первый раз встречаю в такой нотации. Перед двоеточием имеется ввиду тоже offset? > + offset += block; > + count -= (size_t) block; > + } > + return offset; > +} > [...] -- WBR, Leonid Krivoshein.
next prev parent reply other threads:[~2023-05-14 23:08 UTC|newest] Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-05-04 13:42 [make-initrd] [PATCH 0/3] " Alexey Gladkov 2023-05-04 13:42 ` [make-initrd] [PATCH 1/3] " Alexey Gladkov 2023-05-05 3:08 ` Leonid Krivoshein 2023-05-05 17:02 ` Alexey Gladkov 2023-05-05 4:03 ` Leonid Krivoshein 2023-05-05 17:16 ` Alexey Gladkov 2023-05-05 5:21 ` Leonid Krivoshein 2023-05-05 17:24 ` Alexey Gladkov 2023-05-14 20:12 ` Leonid Krivoshein 2023-05-14 20:45 ` Alexey Gladkov 2023-05-14 20:57 ` Leonid Krivoshein 2023-05-15 8:52 ` Alexey Gladkov 2023-05-14 23:08 ` Leonid Krivoshein [this message] 2023-05-15 9:05 ` Alexey Gladkov 2023-05-15 0:47 ` Leonid Krivoshein 2023-05-15 9:12 ` Alexey Gladkov 2023-05-15 4:38 ` Leonid Krivoshein 2023-05-15 10:43 ` Alexey Gladkov 2023-05-18 6:39 ` Leonid Krivoshein 2023-05-18 7:05 ` Alexey Gladkov 2023-05-20 9:00 ` Leonid Krivoshein 2023-05-20 13:18 ` Alexey Gladkov 2023-05-20 15:17 ` Vladimir D. Seleznev 2023-05-20 17:23 ` Leonid Krivoshein 2023-05-20 18:51 ` Alexey Gladkov 2023-05-21 8:53 ` [make-initrd] [PATCH] ueventd: Don't use a epoll timeout when it's not needed Alexey Gladkov 2023-05-22 4:46 ` Leonid Krivoshein 2023-05-22 7:54 ` Alexey Gladkov 2023-05-22 9:19 ` Alexey Gladkov 2023-05-22 7:57 ` [make-initrd] [PATCH 1/2] ueventd: Fix memory leak Alexey Gladkov 2023-05-22 7:57 ` [make-initrd] [PATCH 2/2] ueventd: Change interface rd_asprintf_or_die Alexey Gladkov 2023-05-22 9:36 ` [make-initrd] [PATCH v2] " Alexey Gladkov 2023-05-20 16:37 ` [make-initrd] [PATCH 1/3] ueventd: Simplify call of the queue handler Alexey Gladkov 2023-05-20 16:37 ` [make-initrd] [PATCH 2/3] ueventd: Rename fd_list to fd_handler_list Alexey Gladkov 2023-05-20 16:37 ` [make-initrd] [PATCH 3/3] ueventd: Drop obsolete declarations Alexey Gladkov 2023-05-04 13:42 ` [make-initrd] [PATCH 2/3] Replace polld by uevent queue Alexey Gladkov 2023-05-04 13:42 ` [make-initrd] [PATCH 3/3] feature/kickstart: Reset rootdelay timer after kickstart Alexey Gladkov 2023-05-06 19:45 ` [make-initrd] ueventd: Add a prefix to the logging functions to avoid name collisions Alexey Gladkov 2023-05-06 19:45 ` [make-initrd] ueventd: Allow to configure the log destination Alexey Gladkov 2023-05-06 19:45 ` [make-initrd] ueventd: Pass the program name when initializing the logger Alexey Gladkov 2023-05-06 19:45 ` [make-initrd] ueventd: Rewrite logging function to make it more atomic Alexey Gladkov 2023-05-07 12:48 ` [make-initrd] [PATCH 0/3] Reimplement ueventd Alexey Gladkov 2023-05-13 11:50 ` Alexey Gladkov 2023-05-14 20:15 ` Leonid Krivoshein 2023-05-14 20:49 ` Alexey Gladkov
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