!C99Shell v. 1.0 pre-release build #13!

Software: Apache/2.0.54 (Unix) mod_perl/1.99_09 Perl/v5.8.0 mod_ssl/2.0.54 OpenSSL/0.9.7l DAV/2 FrontPage/5.0.2.2635 PHP/4.4.0 mod_gzip/2.0.26.1a 

uname -a: Linux snow.he.net 4.4.276-v2-mono-1 #1 SMP Wed Jul 21 11:21:17 PDT 2021 i686 

uid=99(nobody) gid=98(nobody) groups=98(nobody) 

Safe-mode: OFF (not secure)

/usr/include/asm-i386/   drwxr-xr-x
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Viewing file:     smplock.h (1.41 KB)      -rw-r--r--
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/*
 * <asm/smplock.h>
 *
 * i386 SMP lock implementation
 */
#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/sched.h>
#include <asm/current.h>

extern spinlock_cacheline_t kernel_flag_cacheline;  
#define kernel_flag kernel_flag_cacheline.lock      

#define kernel_locked()        spin_is_locked(&kernel_flag)

/*
 * Release global kernel lock and global interrupt lock
 */
#define release_kernel_lock(task, cpu) \
do { \
    if (task->lock_depth >= 0) \
        spin_unlock(&kernel_flag); \
    release_irqlock(cpu); \
    __sti(); \
} while (0)

/*
 * Re-acquire the kernel lock
 */
#define reacquire_kernel_lock(task) \
do { \
    if (task->lock_depth >= 0) \
        spin_lock(&kernel_flag); \
} while (0)


/*
 * Getting the big kernel lock.
 *
 * This cannot happen asynchronously,
 * so we only need to worry about other
 * CPU's.
 */
static __inline__ void lock_kernel(void)
{
#if 1
    if (!++current->lock_depth)
        spin_lock(&kernel_flag);
#else
    __asm__ __volatile__(
        "incl %1\n\t"
        "jne 9f"
        spin_lock_string
        "\n9:"
        :"=m" (__dummy_lock(&kernel_flag)),
         "=m" (current->lock_depth));
#endif
}

static __inline__ void unlock_kernel(void)
{
    if (current->lock_depth < 0)
        out_of_line_bug();
#if 1
    if (--current->lock_depth < 0)
        spin_unlock(&kernel_flag);
#else
    __asm__ __volatile__(
        "decl %1\n\t"
        "jns 9f\n\t"
        spin_unlock_string
        "\n9:"
        :"=m" (__dummy_lock(&kernel_flag)),
         "=m" (current->lock_depth));
#endif
}

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