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From: Leonid Krivoshein <klark.devel@gmail.com>
To: make-initrd@lists.altlinux.org
Subject: Re: [make-initrd] [PATCH 1/3] Reimplement ueventd
Date: Fri, 5 May 2023 08:21:25 +0300
Message-ID: <6868e911-b66b-431c-1164-f45158396dfa@gmail.com> (raw)
In-Reply-To: <6b444ed922286eb3df8f5322b1bddf9c55753eb8.1683200226.git.gladkov.alexey@gmail.com>


On 5/4/23 16:42, Alexey Gladkov wrote:
> [...]
> diff --git a/datasrc/ueventd/queue-processor.c b/datasrc/ueventd/queue-processor.c
> new file mode 100644
> index 00000000..ab5e03e4
> --- /dev/null
> +++ b/datasrc/ueventd/queue-processor.c
> @@ -0,0 +1,116 @@
> +/* SPDX-License-Identifier: GPL-2.0-or-later */
> +
> +#include <sys/types.h>
> +#include <sys/stat.h>
> +#include <sys/wait.h>
> +
> +#include <stdlib.h>
> +#include <stdio.h>
> +#include <string.h>
> +#include <signal.h>
> +#include <dirent.h>
> +#include <fcntl.h>
> +#include <errno.h>
> +
> +#include "ueventd.h"
> +
> [...]
> +void move_files(char *srcdir, char *dstdir)
> +{
> +	struct dirent *ent;
> +	int srcfd, dstfd;
> +
> +	if ((srcfd = open(srcdir, O_RDONLY | O_CLOEXEC)) < 0)
> +		fatal("open: %s: %m", srcdir);
> +
> +	errno = 0;
> +	if ((dstfd = open(dstdir, O_RDONLY | O_CLOEXEC)) < 0) {
> +		if (errno == ENOENT) {

open() тоже прерываемый примитив, но его ты оборачивать не стал. Так 
задумано?

> +			if (mkdir(dstdir, 0755) < 0)
> +				fatal("mkdir: %s: %m", dstdir);
> +			dstfd = open(dstdir, O_RDONLY | O_CLOEXEC);
> +		}
> +		if (dstfd < 0)
> +			fatal("open: %s: %m", dstdir);
> +	}
> +
> +	DIR *d = fdopendir(srcfd);
> +	if (!d)
> +		fatal("fdopendir: %m");
> +
> +	while ((ent = xreaddir(d, srcdir)) != NULL) {
> +		if (ent->d_name[0] != '.' && ent->d_type == DT_REG &&
> +		    renameat(srcfd, ent->d_name, dstfd, ent->d_name) < 0)
> +			fatal("rename `%s/%s' -> `%s/%s': %m", srcdir, ent->d_name, dstdir, ent->d_name);
> +	}
> +
> +	closedir(d);
> +	close(dstfd);

Возможно тут и нет ошибки, но srcfd будет закрыт только при завершении 
программы, а что насчёт повторного вызова функции с такой же srcdir или 
такое невозможно?

> +}
> [...]


-- 
WBR, Leonid Krivoshein.


  parent reply	other threads:[~2023-05-05  5:21 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 [this message]
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
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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